sw/qa/extras/layout/data/hidden-sections-with-pagestyles.odt |binary
 sw/qa/extras/layout/data/hiddensection.fodt                  |  128 +++++++++++
 sw/qa/extras/layout/layout3.cxx                              |  127 ++++++++++
 sw/source/core/layout/laycache.cxx                           |   66 +++--
 sw/source/core/layout/layhelp.hxx                            |    3 
 sw/source/core/layout/sectfrm.cxx                            |   91 +++++++
 6 files changed, 382 insertions(+), 33 deletions(-)

New commits:
commit 085138a807cdd223ced7acda039c968e56739e6b
Author:     Michael Stahl <michael.st...@allotropia.de>
AuthorDate: Mon Sep 2 18:24:53 2024 +0200
Commit:     Mike Kaganski <mike.kagan...@collabora.com>
CommitDate: Thu Sep 5 13:11:01 2024 +0200

    sw: fix problem with 0-height text frames after unhiding section
    
    Not sure how this happens, apparently only in some specific
    circumstance, but the problem is that the SwTextFrame::Format() does
    nothing because !aAccess.GetPara()->GetReformat().Len().
    
    Also adapt the loop in SwSectionFrame::SwClientNotify() to columns.
    
    (regression from commit ff7f1b59e22092d8548459e75fe912db852f056f)
    
    Change-Id: Iba0b1657f915530ab9841823ad5ad1e7faa15e8d
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/172776
    Tested-by: Jenkins
    Reviewed-by: Michael Stahl <michael.st...@allotropia.de>
    (cherry picked from commit d25f3a9eac1690e1d05840a4f00796d6ddba669b)
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/172761
    Reviewed-by: Mike Kaganski <mike.kagan...@collabora.com>

diff --git a/sw/qa/extras/layout/data/hiddensection.fodt 
b/sw/qa/extras/layout/data/hiddensection.fodt
new file mode 100644
index 000000000000..b760e308e9b4
--- /dev/null
+++ b/sw/qa/extras/layout/data/hiddensection.fodt
@@ -0,0 +1,128 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<office:document xmlns:css3t="http://www.w3.org/TR/css3-text/"; 
xmlns:grddl="http://www.w3.org/2003/g/data-view#"; 
xmlns:xhtml="http://www.w3.org/1999/xhtml"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"; 
xmlns:xforms="http://www.w3.org/2002/xforms"; 
xmlns:dom="http://www.w3.org/2001/xml-events"; 
xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0" 
xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" 
xmlns:math="http://www.w3.org/1998/Math/MathML"; 
xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" 
xmlns:ooo="http://openoffice.org/2004/office"; 
xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" 
xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" 
xmlns:ooow="http://openoffice.org/2004/writer"; 
xmlns:xlink="http://www.w3.org/1999/xlink"; 
xmlns:drawooo="http://openoffice.org/2010/draw"; 
xmlns:oooc="http://openoffice.org/2004/calc"; 
xmlns:dc="http://purl.org/dc/elements/1.1/"; xmlns:c
 alcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0" 
xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" 
xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" 
xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" 
xmlns:tableooo="http://openoffice.org/2009/table"; 
xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" 
xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" 
xmlns:rpt="http://openoffice.org/2005/report"; 
xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0"
 xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" 
xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" 
xmlns:officeooo="http://openoffice.org/2009/office"; 
xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" 
xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0" 
xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" 
xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:
 meta:1.0" 
xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0"
 office:version="1.3" office:mimetype="application/vnd.oasis.opendocument.text">
+ 
<office:meta><meta:creation-date>2024-09-02T14:59:23.392522133</meta:creation-date><dc:date>2024-09-02T18:22:43.232050806</dc:date><meta:editing-duration>PT6M</meta:editing-duration><meta:editing-cycles>4</meta:editing-cycles><meta:generator>LibreOfficeDev/25.2.0.0.alpha0$Linux_X86_64
 
LibreOffice_project/b350c056394d1e55bbb56b2c5b8bd619ab96c75a</meta:generator><meta:document-statistic
 meta:table-count="0" meta:image-count="0" meta:object-count="0" 
meta:page-count="1" meta:paragraph-count="7" meta:word-count="8" 
meta:character-count="47" 
meta:non-whitespace-character-count="46"/></office:meta>
+ <office:font-face-decls>
+  <style:font-face style:name="Arial Unicode MS1" svg:font-family="'Arial 
Unicode MS'" style:font-family-generic="system" style:font-pitch="variable"/>
+  <style:font-face style:name="Liberation Serif" svg:font-family="'Liberation 
Serif'" style:font-family-generic="roman" style:font-pitch="variable"/>
+  <style:font-face style:name="Noto Serif CJK SC" svg:font-family="'Noto Serif 
CJK SC'" style:font-family-generic="system" style:font-pitch="variable"/>
+ </office:font-face-decls>
+ <office:styles>
+  <style:default-style style:family="graphic">
+   <style:graphic-properties svg:stroke-color="#3465a4" 
draw:fill-color="#729fcf" fo:wrap-option="no-wrap" draw:shadow-offset-x="0.3cm" 
draw:shadow-offset-y="0.3cm" draw:start-line-spacing-horizontal="0.283cm" 
draw:start-line-spacing-vertical="0.283cm" 
draw:end-line-spacing-horizontal="0.283cm" 
draw:end-line-spacing-vertical="0.283cm" style:writing-mode="lr-tb" 
style:flow-with-text="false"/>
+   <style:paragraph-properties style:text-autospace="ideograph-alpha" 
style:line-break="strict" loext:tab-stop-distance="0cm" 
style:font-independent-line-spacing="false">
+    <style:tab-stops/>
+   </style:paragraph-properties>
+   <style:text-properties style:use-window-font-color="true" 
loext:opacity="0%" style:font-name="Liberation Serif" fo:font-size="12pt" 
fo:language="de" fo:country="DE" style:letter-kerning="true" 
style:font-name-asian="Noto Serif CJK SC" style:font-size-asian="10.5pt" 
style:language-asian="zh" style:country-asian="CN" 
style:font-name-complex="Arial Unicode MS1" style:font-size-complex="12pt" 
style:language-complex="hi" style:country-complex="IN"/>
+  </style:default-style>
+  <style:default-style style:family="paragraph">
+   <style:paragraph-properties fo:orphans="2" fo:widows="2" 
fo:hyphenation-ladder-count="no-limit" fo:hyphenation-keep="auto" 
loext:hyphenation-keep-type="column" style:text-autospace="ideograph-alpha" 
style:punctuation-wrap="hanging" style:line-break="strict" 
style:tab-stop-distance="1.251cm" style:writing-mode="page"/>
+   <style:text-properties style:use-window-font-color="true" 
loext:opacity="0%" style:font-name="Liberation Serif" fo:font-size="12pt" 
fo:language="de" fo:country="DE" style:letter-kerning="true" 
style:font-name-asian="Noto Serif CJK SC" style:font-size-asian="10.5pt" 
style:language-asian="zh" style:country-asian="CN" 
style:font-name-complex="Arial Unicode MS1" style:font-size-complex="12pt" 
style:language-complex="hi" style:country-complex="IN" fo:hyphenate="false" 
fo:hyphenation-remain-char-count="2" fo:hyphenation-push-char-count="2" 
loext:hyphenation-no-caps="false" loext:hyphenation-no-last-word="false" 
loext:hyphenation-word-char-count="5" loext:hyphenation-zone="no-limit"/>
+  </style:default-style>
+  <style:default-style style:family="table">
+   <style:table-properties table:border-model="collapsing"/>
+  </style:default-style>
+  <style:default-style style:family="table-row">
+   <style:table-row-properties fo:keep-together="auto"/>
+  </style:default-style>
+  <style:style style:name="Standard" style:family="paragraph" 
style:class="text"/>
+  <text:outline-style style:name="Outline">
+   <text:outline-level-style text:level="1" loext:num-list-format="%1%" 
style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="2" loext:num-list-format="%2%" 
style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="3" loext:num-list-format="%3%" 
style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="4" loext:num-list-format="%4%" 
style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="5" loext:num-list-format="%5%" 
style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="6" loext:num-list-format="%6%" 
style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="7" loext:num-list-format="%7%" 
style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="8" loext:num-list-format="%8%" 
style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="9" loext:num-list-format="%9%" 
style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="10" loext:num-list-format="%10%" 
style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+  </text:outline-style>
+  <text:notes-configuration text:note-class="footnote" style:num-format="1" 
text:start-value="0" text:footnotes-position="page" 
text:start-numbering-at="document"/>
+  <text:notes-configuration text:note-class="endnote" style:num-format="i" 
text:start-value="0"/>
+  <text:linenumbering-configuration text:number-lines="false" 
text:offset="0.499cm" style:num-format="1" text:number-position="left" 
text:increment="5"/>
+  </office:styles>
+ <office:automatic-styles>
+  <style:style style:name="P1" style:family="paragraph" 
style:parent-style-name="Standard">
+   <style:text-properties/>
+  </style:style>
+  <style:style style:name="Sect1" style:family="section">
+   <style:section-properties style:editable="false">
+    <style:columns fo:column-count="1" fo:column-gap="0cm"/>
+   </style:section-properties>
+  </style:style>
+  <style:page-layout style:name="pm1">
+   <style:page-layout-properties fo:page-width="21.001cm" 
fo:page-height="29.7cm" style:num-format="1" style:print-orientation="portrait" 
fo:margin-top="2cm" fo:margin-bottom="2cm" fo:margin-left="2cm" 
fo:margin-right="2cm" style:writing-mode="lr-tb" 
style:layout-grid-color="#c0c0c0" style:layout-grid-lines="20" 
style:layout-grid-base-height="0.706cm" style:layout-grid-ruby-height="0.353cm" 
style:layout-grid-mode="none" style:layout-grid-ruby-below="false" 
style:layout-grid-print="false" style:layout-grid-display="false" 
style:footnote-max-height="0cm" loext:margin-gutter="0cm">
+    <style:footnote-sep style:width="0.018cm" 
style:distance-before-sep="0.101cm" style:distance-after-sep="0.101cm" 
style:line-style="solid" style:adjustment="left" style:rel-width="25%" 
style:color="#000000"/>
+   </style:page-layout-properties>
+   <style:header-style/>
+   <style:footer-style/>
+  </style:page-layout>
+  <style:style style:name="dp1" style:family="drawing-page">
+   <style:drawing-page-properties draw:background-size="full"/>
+  </style:style>
+ </office:automatic-styles>
+ <office:master-styles>
+  <style:master-page style:name="Standard" style:page-layout-name="pm1" 
draw:style-name="dp1"/>
+ </office:master-styles>
+ <office:body>
+  <office:text>
+   <text:sequence-decls>
+    <text:sequence-decl text:display-outline-level="0" 
text:name="Illustration"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Table"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Text"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Drawing"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Figure"/>
+   </text:sequence-decls>
+   <text:p text:style-name="P1">Aaa</text:p>
+   <text:p text:style-name="P1">vcvacv</text:p>
+   <text:section text:style-name="Sect1" text:name="Section1">
+    <text:p text:style-name="P1">aav adf</text:p>
+    <text:p text:style-name="P1">acvcvdf</text:p>
+    <text:p text:style-name="P1">addfdff</text:p>
+    <text:p text:style-name="P1"/>
+   </text:section>
+   <text:p text:style-name="P1">asdcccf</text:p>
+   <text:p text:style-name="P1">asdbcvcvfc</text:p>
+  </office:text>
+ </office:body>
+</office:document>
\ No newline at end of file
diff --git a/sw/qa/extras/layout/layout3.cxx b/sw/qa/extras/layout/layout3.cxx
index d6580ac65ab2..4eb41c7478f8 100644
--- a/sw/qa/extras/layout/layout3.cxx
+++ b/sw/qa/extras/layout/layout3.cxx
@@ -1802,6 +1802,41 @@ CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, testTdf156724)
     assertXPath(pXmlDoc, "/root/page"_ostr, 2);
 }
 
+CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, testSectionUnhide)
+{
+    createSwDoc("hiddensection.fodt");
+
+    {
+        xmlDocUniquePtr pXmlDoc = parseLayoutDump();
+        assertXPath(pXmlDoc, 
"/root/page/body/section/txt/infos/bounds[@height='0']"_ostr, 0);
+        discardDumpedLayout();
+    }
+
+    // Hide the section
+    auto xTextSectionsSupplier = 
mxComponent.queryThrow<css::text::XTextSectionsSupplier>();
+    auto xSections = xTextSectionsSupplier->getTextSections();
+    CPPUNIT_ASSERT(xSections);
+    auto xSection = 
xSections->getByName(u"Section1"_ustr).queryThrow<css::beans::XPropertySet>();
+    xSection->setPropertyValue(u"IsVisible"_ustr, css::uno::Any(false));
+    calcLayout();
+
+    {
+        xmlDocUniquePtr pXmlDoc = parseLayoutDump();
+        assertXPath(pXmlDoc, 
"/root/page/body/section/txt/infos/bounds[@height='0']"_ostr, 4);
+        discardDumpedLayout();
+    }
+
+    xSection->setPropertyValue(u"IsVisible"_ustr, css::uno::Any(true));
+    calcLayout();
+
+    {
+        xmlDocUniquePtr pXmlDoc = parseLayoutDump();
+        // the problem was that 3 of the text frames had 0 height because 
Format was skipped
+        assertXPath(pXmlDoc, 
"/root/page/body/section/txt/infos/bounds[@height='0']"_ostr, 0);
+        discardDumpedLayout();
+    }
+}
+
 CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, testHiddenSectionPageDescs)
 {
     createSwDoc("hidden-sections-with-pagestyles.odt");
@@ -2944,7 +2979,7 @@ CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, 
testTdf160958_page_break)
     assertXPath(pExportDump, "//page/body/section/txt[1]/SwParaPortion"_ostr, 
0);
     assertXPath(pExportDump, "//page/body/section/txt[2]/SwParaPortion"_ostr, 
0);
     assertXPath(pExportDump, "//page/body/section/txt[3]/SwParaPortion"_ostr, 
0);
-    assertXPath(pExportDump, 
"//page/body/section/txt[4]/SwParaPortion/SwLineLayout"_ostr, 5);
+    assertXPath(pExportDump, "//page/body/section/txt[4]/SwParaPortion"_ostr, 
0);
     assertXPath(pExportDump, "//page/body/section/txt[5]/SwParaPortion"_ostr, 
0);
     assertXPath(pExportDump, "//page/body/section/txt[6]/SwParaPortion"_ostr, 
0);
     assertXPath(pExportDump, "//page/body/section/txt[7]/SwParaPortion"_ostr, 
0);
diff --git a/sw/source/core/layout/sectfrm.cxx 
b/sw/source/core/layout/sectfrm.cxx
index 7506b5a001be..d14eb766fb04 100644
--- a/sw/source/core/layout/sectfrm.cxx
+++ b/sw/source/core/layout/sectfrm.cxx
@@ -2732,8 +2732,31 @@ void SwSectionFrame::SwClientNotify(const SwModify& 
rMod, const SfxHint& rHint)
             SwRectFnSet(this).SetHeight(area, HUGE_POSITIVE);
         }
 
-        for (SwFrame* pLowerFrame = Lower(); pLowerFrame; pLowerFrame = 
pLowerFrame->GetNext())
+        SwColumnFrame * pColumn{Lower()->IsColumnFrame()
+                ? static_cast<SwColumnFrame*>(Lower()) : nullptr};
+        auto IterateLower = [&pColumn](SwFrame *const pLowerFrame) -> SwFrame*
         {
+            if (pLowerFrame->GetNext())
+            {
+                return pLowerFrame->GetNext();
+            }
+            if (pColumn)
+            {
+                pColumn = static_cast<SwColumnFrame*>(pColumn->GetNext());
+                if (pColumn)
+                {
+                    return 
static_cast<SwLayoutFrame*>(pColumn->Lower())->Lower();
+                }
+            }
+            return nullptr;
+        };
+        for (SwFrame* pLowerFrame = pColumn
+                    ? static_cast<SwLayoutFrame*>(pColumn->Lower())->Lower()
+                    : Lower();
+             pLowerFrame;
+             pLowerFrame = IterateLower(pLowerFrame))
+        {
+            pLowerFrame->Prepare(PrepareHint::Clear, nullptr, false);
             pLowerFrame->InvalidateAll();
             pLowerFrame->InvalidateObjs(false);
         }
@@ -2765,24 +2788,8 @@ void SwSectionFrame::SwClientNotify(const SwModify& 
rMod, const SfxHint& rHint)
                 pFirstOnPage = pFirstOnPage->GetUpper();
             }
             assert(pFirstOnPage->IsContentFrame() || 
pFirstOnPage->IsTabFrame());
-            SwColumnFrame * pColumn{Lower()->IsColumnFrame()
-                    ? static_cast<SwColumnFrame*>(Lower()) : nullptr};
-            auto IterateLower = [&pColumn](SwFrame *const pLowerFrame) -> 
SwFrame*
-            {
-                if (pLowerFrame->GetNext())
-                {
-                    return pLowerFrame->GetNext();
-                }
-                if (pColumn)
-                {
-                    pColumn = static_cast<SwColumnFrame*>(pColumn->GetNext());
-                    if (pColumn)
-                    {
-                        return 
static_cast<SwLayoutFrame*>(pColumn->Lower())->Lower();
-                    }
-                }
-                return nullptr;
-            };
+            pColumn = Lower()->IsColumnFrame()
+                ? static_cast<SwColumnFrame*>(Lower()) : nullptr;
             for (SwFrame* pLowerFrame = pColumn
                         ? 
static_cast<SwLayoutFrame*>(pColumn->Lower())->Lower()
                         : Lower();
commit aff04bbcde8cbc0bcbf94041713447fbc9ce896a
Author:     Michael Stahl <michael.st...@allotropia.de>
AuthorDate: Thu Aug 29 13:27:03 2024 +0200
Commit:     Mike Kaganski <mike.kagan...@collabora.com>
CommitDate: Thu Sep 5 13:10:55 2024 +0200

    sw: layout: fix page breaks when unhiding a hidden section
    
    Commit ff7f1b59e22092d8548459e75fe912db852f056f removed the
    DelFrames()/MakeFrames() in SwSection::ImplSetHiddenFlag(), which was
    handling the page breaks previously.
    
    Add some code to SwSectionFrame::SwClientNotify() to call
    SwLayHelper::CheckInsertPage() which appears to be the important part
    called by InsertCnt_() previously.
    
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/172609
    Tested-by: Jenkins
    Reviewed-by: Michael Stahl <michael.st...@allotropia.de>
    (cherry picked from commit a97e245ba11598050e1800fde9ace796d20e9df2)
    
    sw: fix iterating columned sections in SwSectionFrame::SwClientNotify()
    
    This was asserting in JunitTest_sw_unoapi_3 on libreoffice-24-2 branch
    but strangely enough not on master.
    
    (regression from commit a97e245ba11598050e1800fde9ace796d20e9df2)
    
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/172740
    Tested-by: Jenkins
    Reviewed-by: Michael Stahl <michael.st...@allotropia.de>
    (cherry picked from commit 5f0f69ba9b7d083cf7c0169be6e9c916008787bb)
    
    Change-Id: Id6560d8706abf92fba259a5d534d6cd5067c8e6a
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/172665
    Reviewed-by: Mike Kaganski <mike.kagan...@collabora.com>
    Tested-by: Jenkins

diff --git a/sw/qa/extras/layout/data/hidden-sections-with-pagestyles.odt 
b/sw/qa/extras/layout/data/hidden-sections-with-pagestyles.odt
new file mode 100644
index 000000000000..5b33e7cc86a1
Binary files /dev/null and 
b/sw/qa/extras/layout/data/hidden-sections-with-pagestyles.odt differ
diff --git a/sw/qa/extras/layout/layout3.cxx b/sw/qa/extras/layout/layout3.cxx
index 852e88d3da90..d6580ac65ab2 100644
--- a/sw/qa/extras/layout/layout3.cxx
+++ b/sw/qa/extras/layout/layout3.cxx
@@ -1802,6 +1802,96 @@ CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, testTdf156724)
     assertXPath(pXmlDoc, "/root/page"_ostr, 2);
 }
 
+CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, testHiddenSectionPageDescs)
+{
+    createSwDoc("hidden-sections-with-pagestyles.odt");
+
+    {
+        xmlDocUniquePtr pXmlDoc = parseLayoutDump();
+        assertXPath(pXmlDoc, "/root/page"_ostr, 2);
+        assertXPath(pXmlDoc, "/root/page[1]"_ostr, "formatName"_ostr, "Hotti");
+        assertXPath(pXmlDoc, "/root/page[1]/body/section"_ostr, 1);
+        assertXPath(pXmlDoc, "/root/page[1]/body/section[1]"_ostr, 
"formatName"_ostr,
+                    u"Verfügung"_ustr);
+        assertXPath(pXmlDoc, "/root/page[2]/body/section"_ostr, 2);
+        assertXPath(pXmlDoc, "/root/page[2]/body/section[1]"_ostr, 
"formatName"_ostr,
+                    u"Verfügung"_ustr);
+        // should be > 0, no idea why it's different on Windows
+#ifdef _WIN32
+        assertXPath(pXmlDoc, 
"/root/page[2]/body/section[1]/infos/bounds"_ostr, "height"_ostr,
+                    "552");
+#else
+        assertXPath(pXmlDoc, 
"/root/page[2]/body/section[1]/infos/bounds"_ostr, "height"_ostr,
+                    "532");
+#endif
+        assertXPath(pXmlDoc, "/root/page[2]/body/section[2]"_ostr, 
"formatName"_ostr,
+                    "Rueckantwort");
+        assertXPath(pXmlDoc, 
"/root/page[2]/body/section[2]/infos/bounds"_ostr, "height"_ostr, "0");
+        assertXPath(pXmlDoc, "/root/page[2]"_ostr, "formatName"_ostr, 
"Folgeseite");
+        discardDumpedLayout();
+    }
+
+    // toggle one section hidden and other visible
+    executeMacro(
+        
u"vnd.sun.star.script:Standard.Module1.Main?language=Basic&location=document"_ustr);
+    Scheduler::ProcessEventsToIdle();
+
+    {
+        xmlDocUniquePtr pXmlDoc = parseLayoutDump();
+        assertXPath(pXmlDoc, "/root/page"_ostr, 3);
+        assertXPath(pXmlDoc, "/root/page[1]"_ostr, "formatName"_ostr, "Hotti");
+        assertXPath(pXmlDoc, "/root/page[1]/body/section"_ostr, 2);
+        assertXPath(pXmlDoc, "/root/page[1]/body/section[1]"_ostr, 
"formatName"_ostr,
+                    u"Verfügung"_ustr);
+        assertXPath(pXmlDoc, "/root/page[1]/body/section[2]"_ostr, 
"formatName"_ostr,
+                    "Rueckantwort");
+        assertXPath(pXmlDoc, "/root/page[2]"_ostr, "formatName"_ostr, "Empty 
Page");
+        assertXPath(pXmlDoc, "/root/page[3]/body/section"_ostr, 1);
+        assertXPath(pXmlDoc, "/root/page[3]/body/section[1]"_ostr, 
"formatName"_ostr,
+                    "Rueckantwort");
+        // should be > 0, no idea why it's different on Windows
+#ifdef _WIN32
+        assertXPath(pXmlDoc, 
"/root/page[3]/body/section[1]/infos/bounds"_ostr, "height"_ostr,
+                    "552");
+#else
+        assertXPath(pXmlDoc, 
"/root/page[3]/body/section[1]/infos/bounds"_ostr, "height"_ostr,
+                    "532");
+#endif
+        assertXPath(pXmlDoc, "/root/page[3]"_ostr, "formatName"_ostr, 
"RueckantwortRechts");
+        discardDumpedLayout();
+    }
+
+    // toggle one section hidden and other visible
+    executeMacro(
+        
u"vnd.sun.star.script:Standard.Module1.Main?language=Basic&location=document"_ustr);
+    Scheduler::ProcessEventsToIdle();
+
+    {
+        xmlDocUniquePtr pXmlDoc = parseLayoutDump();
+        assertXPath(pXmlDoc, "/root/page"_ostr, 2);
+        assertXPath(pXmlDoc, "/root/page[1]"_ostr, "formatName"_ostr, "Hotti");
+        assertXPath(pXmlDoc, "/root/page[1]/body/section"_ostr, 1);
+        assertXPath(pXmlDoc, "/root/page[1]/body/section[1]"_ostr, 
"formatName"_ostr,
+                    u"Verfügung"_ustr);
+        assertXPath(pXmlDoc, "/root/page[2]/body/section"_ostr, 2);
+        assertXPath(pXmlDoc, "/root/page[2]/body/section[1]"_ostr, 
"formatName"_ostr,
+                    u"Verfügung"_ustr);
+        // should be > 0, no idea why it's different on Windows
+#ifdef _WIN32
+        assertXPath(pXmlDoc, 
"/root/page[2]/body/section[1]/infos/bounds"_ostr, "height"_ostr,
+                    "552");
+#else
+        assertXPath(pXmlDoc, 
"/root/page[2]/body/section[1]/infos/bounds"_ostr, "height"_ostr,
+                    "532");
+#endif
+        assertXPath(pXmlDoc, "/root/page[2]/body/section[2]"_ostr, 
"formatName"_ostr,
+                    "Rueckantwort");
+        assertXPath(pXmlDoc, 
"/root/page[2]/body/section[2]/infos/bounds"_ostr, "height"_ostr, "0");
+        assertXPath(pXmlDoc, "/root/page[2]"_ostr, "formatName"_ostr, 
"Folgeseite");
+        discardDumpedLayout();
+    }
+}
+
 CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, testTdf156725)
 {
     createSwDoc("tdf156725.fodt");
diff --git a/sw/source/core/layout/laycache.cxx 
b/sw/source/core/layout/laycache.cxx
index c2c03bb19f17..75ccf1ac4686 100644
--- a/sw/source/core/layout/laycache.cxx
+++ b/sw/source/core/layout/laycache.cxx
@@ -635,20 +635,25 @@ sal_uLong SwLayHelper::CalcPageCount()
  * The break after flag is set, if the actual content
  * wants a break after.
  */
-bool SwLayHelper::CheckInsertPage()
+bool SwLayHelper::CheckInsertPage(
+    SwPageFrame *& rpPage,
+    SwLayoutFrame *& rpLay,
+    SwFrame *& rpFrame,
+    bool & rIsBreakAfter,
+    bool const isForceBreak)
 {
-    bool bEnd = nullptr == mrpPage->GetNext();
-    const SvxFormatBreakItem& rBrk = mrpFrame->GetBreakItem();
-    const SwFormatPageDesc& rDesc = mrpFrame->GetPageDescItem();
+    bool bEnd = nullptr == rpPage->GetNext();
+    const SvxFormatBreakItem& rBrk = rpFrame->GetBreakItem();
+    const SwFormatPageDesc& rDesc = rpFrame->GetPageDescItem();
     // #118195# Do not evaluate page description if frame
     // is a follow frame!
-    const SwPageDesc* pDesc = mrpFrame->IsFlowFrame() &&
-                              SwFlowFrame::CastFlowFrame( mrpFrame 
)->IsFollow() ?
-                              nullptr :
-                              rDesc.GetPageDesc();
+    const SwPageDesc* pDesc = rpFrame->IsFlowFrame()
+                            && SwFlowFrame::CastFlowFrame(rpFrame)->IsFollow()
+                          ? nullptr
+                          : rDesc.GetPageDesc();
 
-    bool bBrk = mnParagraphCnt > mnMaxParaPerPage || mbBreakAfter;
-    mbBreakAfter = rBrk.GetBreak() == SvxBreak::PageAfter ||
+    bool bBrk = isForceBreak || rIsBreakAfter;
+    rIsBreakAfter = rBrk.GetBreak() == SvxBreak::PageAfter ||
                    rBrk.GetBreak() == SvxBreak::PageBoth;
     if ( !bBrk )
         bBrk = rBrk.GetBreak() == SvxBreak::PageBefore ||
@@ -659,47 +664,48 @@ bool SwLayHelper::CheckInsertPage()
         ::std::optional<sal_uInt16> oPgNum;
         if ( !pDesc )
         {
-            pDesc = mrpPage->GetPageDesc()->GetFollow();
+            pDesc = rpPage->GetPageDesc()->GetFollow();
         }
         else
         {
             oPgNum = rDesc.GetNumOffset();
             if ( oPgNum )
-                
static_cast<SwRootFrame*>(mrpPage->GetUpper())->SetVirtPageNum(true);
+                
static_cast<SwRootFrame*>(rpPage->GetUpper())->SetVirtPageNum(true);
         }
-        bool bNextPageRight = !mrpPage->OnRightPage();
+        bool bNextPageRight = !rpPage->OnRightPage();
         bool bInsertEmpty = false;
-        assert(mrpPage->GetUpper()->GetLower());
+        assert(rpPage->GetUpper()->GetLower());
         if (oPgNum && bNextPageRight != IsRightPageByNumber(
-                    *static_cast<SwRootFrame*>(mrpPage->GetUpper()), *oPgNum))
+                    *static_cast<SwRootFrame*>(rpPage->GetUpper()), *oPgNum))
         {
             bNextPageRight = !bNextPageRight;
             bInsertEmpty = true;
         }
         // If the page style is changing, we'll have a first page.
-        bool bNextPageFirst = pDesc != mrpPage->GetPageDesc();
-        ::InsertNewPage( const_cast<SwPageDesc&>(*pDesc), mrpPage->GetUpper(),
-             bNextPageRight, bNextPageFirst, bInsertEmpty, false, 
mrpPage->GetNext());
+        bool bNextPageFirst = pDesc != rpPage->GetPageDesc();
+        ::InsertNewPage( const_cast<SwPageDesc&>(*pDesc), rpPage->GetUpper(),
+             bNextPageRight, bNextPageFirst, bInsertEmpty, false, 
rpPage->GetNext());
         if ( bEnd )
         {
-            OSL_ENSURE( mrpPage->GetNext(), "No new page?" );
+            OSL_ENSURE( rpPage->GetNext(), "No new page?" );
             do
-            {   mrpPage = static_cast<SwPageFrame*>(mrpPage->GetNext());
-            } while ( mrpPage->GetNext() );
+            {
+                rpPage = static_cast<SwPageFrame*>(rpPage->GetNext());
+            } while (rpPage->GetNext());
         }
         else
         {
-            OSL_ENSURE( mrpPage->GetNext(), "No new page?" );
-            mrpPage = static_cast<SwPageFrame*>(mrpPage->GetNext());
-            if ( mrpPage->IsEmptyPage() )
+            OSL_ENSURE( rpPage->GetNext(), "No new page?" );
+            rpPage = static_cast<SwPageFrame*>(rpPage->GetNext());
+            if (rpPage->IsEmptyPage())
             {
-                OSL_ENSURE( mrpPage->GetNext(), "No new page?" );
-                mrpPage = static_cast<SwPageFrame*>(mrpPage->GetNext());
+                OSL_ENSURE( rpPage->GetNext(), "No new page?" );
+                rpPage = static_cast<SwPageFrame*>(rpPage->GetNext());
             }
         }
-        mrpLay = mrpPage->FindBodyCont();
-        while( mrpLay->Lower() )
-            mrpLay = static_cast<SwLayoutFrame*>(mrpLay->Lower());
+        rpLay = rpPage->FindBodyCont();
+        while (rpLay->Lower())
+            rpLay = static_cast<SwLayoutFrame*>(rpLay->Lower());
         return true;
     }
     return false;
@@ -885,7 +891,7 @@ bool SwLayHelper::CheckInsert( SwNodeOffset nNodeIndex )
             }
 
             SwPageFrame* pLastPage = mrpPage;
-            if( CheckInsertPage() )
+            if (CheckInsertPage(mrpPage, mrpLay, mrpFrame, mbBreakAfter, 
mnMaxParaPerPage < mnParagraphCnt))
             {
                 CheckFlyCache_( pLastPage );
                 if( mrpPrv && mrpPrv->IsTextFrame() && 
!mrpPrv->isFrameAreaSizeValid() )
diff --git a/sw/source/core/layout/layhelp.hxx 
b/sw/source/core/layout/layhelp.hxx
index 02ff3ca4f327..1ac325cfac82 100644
--- a/sw/source/core/layout/layhelp.hxx
+++ b/sw/source/core/layout/layhelp.hxx
@@ -129,7 +129,8 @@ public:
     sal_uLong CalcPageCount();
     bool CheckInsert( SwNodeOffset nNodeIndex );
 
-    bool CheckInsertPage();
+    static bool CheckInsertPage(SwPageFrame *& rpPage, SwLayoutFrame *& rpLay,
+        SwFrame *& rpFrame, bool & rIsBreakAfter, bool const isForceBreak);
 
     /// Look for fresh text frames at this (new) page and set them to the right
     /// position, if they are in the fly cache.
diff --git a/sw/source/core/layout/sectfrm.cxx 
b/sw/source/core/layout/sectfrm.cxx
index 4dc31c4256fd..7506b5a001be 100644
--- a/sw/source/core/layout/sectfrm.cxx
+++ b/sw/source/core/layout/sectfrm.cxx
@@ -39,6 +39,7 @@
 #include <colfrm.hxx>
 #include <tabfrm.hxx>
 #include <ftnfrm.hxx>
+#include "layhelp.hxx"
 #include <layouter.hxx>
 #include <dbg_lay.hxx>
 #include <viewopt.hxx>
@@ -2736,6 +2737,87 @@ void SwSectionFrame::SwClientNotify(const SwModify& 
rMod, const SfxHint& rHint)
             pLowerFrame->InvalidateAll();
             pLowerFrame->InvalidateObjs(false);
         }
+        // Check if any page-breaks have been unhidden, create the new pages.
+        // Call IsHiddenNow() because a parent section could still hide.
+        if (!IsFollow() && IsInDocBody() && !IsInTab() && !IsHiddenNow())
+        {
+#if !ENABLE_WASM_STRIP_ACCESSIBILITY
+            SwViewShell *const pViewShell(getRootFrame()->GetCurrShell());
+            // no notification if SwViewShell is in construction
+            if (pViewShell && !pViewShell->IsInConstructor()
+                && pViewShell->GetLayout()
+                && pViewShell->GetLayout()->IsAnyShellAccessible())
+            {
+                auto pNext = FindNextCnt(true);
+                auto pPrev = FindPrevCnt();
+                pViewShell->InvalidateAccessibleParaFlowRelation(
+                    pNext ? pNext->DynCastTextFrame() : nullptr,
+                    pPrev ? pPrev->DynCastTextFrame() : nullptr );
+            }
+#endif
+            SwSectionFrame * pFollow{this};
+            SwPageFrame * pPage{FindPageFrame()};
+            SwLayoutFrame * pLay{nullptr};
+            bool isBreakAfter{false};
+            SwFrame * pFirstOnPage{pPage->FindFirstBodyContent()};
+            while (pFirstOnPage->GetUpper()->IsInTab())
+            {
+                pFirstOnPage = pFirstOnPage->GetUpper();
+            }
+            assert(pFirstOnPage->IsContentFrame() || 
pFirstOnPage->IsTabFrame());
+            SwColumnFrame * pColumn{Lower()->IsColumnFrame()
+                    ? static_cast<SwColumnFrame*>(Lower()) : nullptr};
+            auto IterateLower = [&pColumn](SwFrame *const pLowerFrame) -> 
SwFrame*
+            {
+                if (pLowerFrame->GetNext())
+                {
+                    return pLowerFrame->GetNext();
+                }
+                if (pColumn)
+                {
+                    pColumn = static_cast<SwColumnFrame*>(pColumn->GetNext());
+                    if (pColumn)
+                    {
+                        return 
static_cast<SwLayoutFrame*>(pColumn->Lower())->Lower();
+                    }
+                }
+                return nullptr;
+            };
+            for (SwFrame* pLowerFrame = pColumn
+                        ? 
static_cast<SwLayoutFrame*>(pColumn->Lower())->Lower()
+                        : Lower();
+                 pLowerFrame;
+                 pLowerFrame = IterateLower(pLowerFrame))
+            {
+                if (pLowerFrame == pFirstOnPage)
+                {
+                    continue;
+                }
+                assert(pLowerFrame->IsContentFrame() || 
pLowerFrame->IsTabFrame());
+                if (SwLayHelper::CheckInsertPage(pPage, pLay, pLowerFrame, 
isBreakAfter, false))
+                {
+                    if (pLowerFrame == Lower())
+                    {   // move the whole section
+                        assert(pFollow == this);
+                        MoveSubTree(pLay, nullptr);
+                    }
+                    else
+                    {
+                        if (GetNext())
+                        {
+                            assert(GetNext()->IsFlowFrame());
+                            
SwFlowFrame::CastFlowFrame(GetNext())->MoveSubTree(pLay, nullptr);
+                        }
+                        pFollow = new SwSectionFrame(*pFollow, false);
+                        SimpleFormat();
+                        pFollow->InsertBehind(pLay, nullptr);
+                        pFollow->Init();
+                        
SwFlowFrame::CastFlowFrame(pLowerFrame)->MoveSubTree(pFollow, nullptr);
+                    }
+                }
+            }
+            CheckPageDescs(FindPageFrame());
+        }
     }
     else
         SwFrame::SwClientNotify(rMod, rHint);

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