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https://issues.apache.org/jira/browse/PDFBOX-5225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17888530#comment-17888530
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Tilman Hausherr commented on PDFBOX-5225:
-----------------------------------------
After searching for the thread that started this all, I found out that I had
already posted a more general workaround there:
https://lists.apache.org/thread/rvhv6wq0fvz6rw53rjcw6gk0wcs4z80y
However that solution isn't fully correct because it assumes that the /P entry
is mandatory, but it isn't. I'll see if I can improve that one, by looking
whether a potential orphan widget occurs is in one of the pages.
> Flattening removes all annotations when widget annotation has no page
> ---------------------------------------------------------------------
>
> Key: PDFBOX-5225
> URL: https://issues.apache.org/jira/browse/PDFBOX-5225
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm
> Affects Versions: 2.0.24
> Reporter: Tilman Hausherr
> Priority: Major
> Attachments: SourceFailure.pdf, screenshot-1.png
>
>
> {code}
> PDAcroForm acroForm = doc.getDocumentCatalog().getAcroForm();
> List<PDField> list = new ArrayList<>();
> list.add(acroForm.getField("VN_NAME"));
> acroForm.flatten(list, true);
> {code}
> The code from buildPagesWidgetsMap that is run when there are widgets with
> missing page references does not consider the field list. So all widgets end
> up in the map instead of only those we care about.
> !screenshot-1.png!
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