https://bugs.kde.org/show_bug.cgi?id=452716
Bug ID: 452716
Summary: Firefox window with browser.tabs.inTitlebar = 1
displays shadows even with "Shadows → Size → None"
Product: Breeze
Version: 5.24.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: window decoration
Assignee: plasma-b...@kde.org
Reporter: tustam...@yahoo.com.br
CC: kwin-bugs-n...@kde.org
Target Milestone: ---
SUMMARY
In Window Decorations, I use Breeze with disabled shadows (Shadows → Size →
None). But I noticed Firefox is still displaying shadows. I'm sure it wasn't
until a few days ago. I strongly suspect this is a regression in Plasma 5.24.4,
because it was installed 3 days ago.
The better I could track down the issue was to find out the issue is related to
Firefox preference browser.tabs.inTitlebar = 1 (in about:config). That
preference makes Firefox window to not display titlebar, with buttons like
minimize/close being attached next to tab bar. If you change the value to 0 or
2, titlebar is displayed and then window shadows disappear.
This is not a Firefox bug, the issue is reproducible with any version. And as I
said, this is a regression, it wasn't that way until recently.
STEPS TO REPRODUCE
1. Disable window shadows in Breeze settings (Window Decorations, edit Breeze,
Shadows → Size = None).
2. Open Firefox.
3. Right-click any point over navigation toolbar except address bar and click
"Customize toolbar...".
3. On lower left, uncheck "Title Bar" (this is the same as setting
browser.tabs.inTitlebar = 1 in about:config).
OBSERVED RESULT
Firefox window has shadows.
EXPECTED RESULT
Firefox window shouldn't have any shadow.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3
ADDITIONAL INFORMATION
X11
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