https://bugs.kde.org/show_bug.cgi?id=490057
Bug ID: 490057
Summary: Legacy X11 apps include mouse buttons results in focus
stealing after vdesktop switch
Classification: Plasma
Product: kwin
Version: 6.1.2
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: chuvik.hac...@gmail.com
Target Milestone: ---
SUMMARY
Enabling "Additionally include mouse buttons" under "System settings -
Application permissions - Legacy X11 App Support" results in X11 apps
receinving the clicks and gaining focus unintentionally after virtual desktop
switching.
STEPS TO REPRODUCE
1. Open an X11 app, I experience this with Google Chrome and Discord.
2. Open System settings and check the "Additionally include mouse buttons".
3. Switch to a different virtual desktop.
4. Use mouse to interact with another X11 app window there, can be window of
the same app. Any mouse events sent to X11 window seem to work including mouse
move and scrolling.
5. Go back to previous desktop using keybaord shortcuts, I used Meta+Ctrl+Left.
It seems important that the cursor is positioned such that it lands on top of a
wayland window after virtual desktop switch. Making sure the cursor is also
within X11 window bounds seems to help reproduce more reliably.
6. Without moving the cursor away from Wayland window, click in the Setting or
or some other wayland app window again.
OBSERVED RESULT
The click drops right through into the X11 app, the X11 app becomes focused on
top of wayland app.
EXPECTED RESULT
The click does not go through the same way it did not go through before the
virtual desktop switching.
SOFTWARE/OS VERSIONS
KDE Plasma Version: 6.1.2
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2
ADDITIONAL INFORMATION
With focus stealing prevention is set to "High", the X11 app would still get
the click although it would not gain focus.
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