https://bugs.kde.org/show_bug.cgi?id=453282
Bug ID: 453282
Summary: Adding a "shade" button to the right hand side of
window titlebars causes the rightmost button to
disappear when an application returns from fullscreen
Product: kwin
Version: 5.24.4
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: decorations
Assignee: kwin-bugs-n...@kde.org
Reporter: stev...@orcon.net.nz
Target Milestone: ---
SUMMARY
Adding the "shade" button to the right hand side of window titlebars causes the
rightmost titlebar button (usually "close") to disappear when an application
returns from fullscreen, as if pushed off the end of the titlebar.
Titlebar is redrawn correctly if the window is later horizontally resized.
Observed with smplayer, VLC and gwenview, when using breeze or oxygen
decorations, but not with plastik.
Removing the shade button from the titlebar or moving it to the left side
restores expected behaviour.
STEPS TO REPRODUCE
1. Use the "breeze" or "oxygen" window decorations.
2. Add a "shade" button anywhere on the right hand side of the titlebar.
3. Launch one of the mentioned applications, enter fullscreen, then return to
windowed.
OBSERVED RESULT
The rightmost titlebar button is either missing entirely or only partially
visible, until the titlebar forced to redraw by resizing the window.
EXPECTED RESULT
Window titlebars are redrawn correctly as soon as an application returns from
fullscreen.
SOFTWARE/OS VERSIONS
Platform: Gentoo GNU/Linux, openrc, X11.
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.93.0
Qt Version: 5.15.3
ADDITIONAL INFORMATION
Getting a window into this state then changing window decorations between
breeze and oxygen does not redraw the titlebar correctly, instead the rightmost
button reappears but the shade button itself vanishes.
Horizontal resizing does not fix this condition, but entering and exiting
fullscreen again returns the titlebar to the original flavor of brokenness.
I'm not sure if all this is related to #450582, but it seems probable to me.
IIRC it appeared around the same time too.
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