https://bugs.kde.org/show_bug.cgi?id=528096
Bug ID: 528096
Summary: Window briefly disappears when rapidly toggling
fullscreen with Stretch animation enabled
Classification: Plasma
Product: kwin
Version First 6.7.5
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: effects-various
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 197880
--> https://bugs.kde.org/attachment.cgi?id=197880&action=edit
Main issue: With Stretch enabled, rapidly toggling fullscreen from a
non-maximized window briefly reveals the windows or desktop behind it.
I'm using KDE Plasma 6.7.5 on Wayland with Intel graphics.
When an app like mpv is in windowed mode (not maximized), rapidly pressing F to
toggle fullscreen causes the window to briefly disappear, showing the desktop
or other windows behind it.
This only happens when **Window Full Screen** animation is set to **Stretch**.
If I change it to **Nothing**, the issue disappears completely. It also doesn't
happen when the window is maximized before entering fullscreen.
**Steps to reproduce:**
1. Open mpv in a normal, non-maximized window.
2. Make sure Window Full Screen animation is set to Stretch.
3. Rapidly press F to enter and exit fullscreen.
**Expected:** The window transitions smoothly without disappearing.
**Actual:** The window briefly disappears, revealing whatever is behind it.
I've attached three videos showing the behavior with Stretch enabled and with
the animation set to Nothing, and with a maximized window with Stretch enabled.
This may be related to https://bugs.kde.org/show_bug.cgi?id=499533, but I'm
using Intel graphics, not AMD.
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 44
KDE Plasma Version: 6.7.5
KDE Frameworks Version: 6.31.0
Qt Version: 6.11.2
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