https://bugs.kde.org/show_bug.cgi?id=460335
Bug ID: 460335
Summary: Block compositing window rule affects windows on
Wayland session
Classification: Plasma
Product: kwin
Version: 5.25.5
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: rules
Assignee: kwin-bugs-n...@kde.org
Reporter: nf.pere...@live.com
CC: isma...@gmail.com
Target Milestone: ---
SUMMARY
When a Block compositing window rule affects a window, I'm not expecting for
there to be any effect on a Plasma Wayland session, as it's not possible to
block compositing on Wayland. But I have found an instance where strange
behavior happens on RetroArch.
Having a rule of Block compositing set to "Force" for RetroArch makes it exit
fullscreen when loading some cores, when it shouldn't be doing so. Removing the
rule returns RetroArch to it's normal behavior.
Note that this rule works as expected when running a Plasma X11 session.
STEPS TO REPRODUCE
1. Open a Plasma Wayland session.
2. Set a rule of Block compositing forced to "Yes" to affect the RetroArch
window.
3. Open RetroArch and set it to fullscreen.
2. Open a game on the Mesen core.
3. Observe RetroArch exiting fullscreen.
OBSERVED RESULT
RetroArch exists fullscreen if the rule is present to force Block compositing.
EXPECTED RESULT
Block compositing should have zero effects on a Plasma Wayland session.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro KDE
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6
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