https://bugs.kde.org/show_bug.cgi?id=477199
Bug ID: 477199
Summary: KWin doesn't redraw the screen after a fullscreened
app closes in some cases
Classification: Plasma
Product: kwin
Version: master
Platform: Other
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: espi...@gmail.com
Target Milestone: ---
Created attachment 163273
--> https://bugs.kde.org/attachment.cgi?id=163273&action=edit
QML snippet that opens a fullscreen window with a window exit button
SUMMARY
I seem to be encountering an issue where if a fullscreened app closes, the app
doesn't get removed from the screen visually, and looks like its still open.
I originally this issue in Plasma Mobile with the initialstart wizard, when the
fullscreen app closes thinking it was a freeze:
https://invent.kde.org/plasma/plasma-mobile/-/issues/265
I can't seem to reproduce it when logged into a Plasma Desktop session, but I
can reproduce it when running Plasma Desktop in kwin's windowed mode.
Attached is a QML snippet that can be used for testing.
STEPS TO REPRODUCE
1. Open Plasma in KWin's windowed mode (QT_QPA_PLATFORM=wayland
dbus-run-session kwin_wayland plasmashell)
2. Open a terminal and run the snippet attached (qmlscene-qt6
./fullscreen-test.qml)
3. Press the "close" button
OBSERVED RESULT
See that it doesn't clear the screen.
Clicking on the bottom left to trigger the screen to redraw (open app launcher)
EXPECTED RESULT
The screen is cleared since the app has closed.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora
KDE Plasma Version: Plasma 6 git master
Qt Version: 6.6
ADDITIONAL INFORMATION
See video attached as well for the example.
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