https://bugs.kde.org/show_bug.cgi?id=471342
Bug ID: 471342
Summary: Sudden window displacement when dragging a window to
de-maximize
Classification: Plasma
Product: kwin
Version: 5.27.5
Platform: openSUSE
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: bugs.7n...@aleeas.com
Target Milestone: ---
SUMMARY
When de-maximizing ("restoring") windows by dragging their title bar, the
window position will suddenly snap depending on where it was dragged from.
Specifically, after dragging past the threshold that triggers de-maximizing,
the top-left corner of the window snaps to the mouse cursor.
This happens exclusively on Wayland, and only when the application was launched
in maximized state.
STEPS TO REPRODUCE
0. Run KWin on Wayland
1. Start Konsole in maximized state (i.e. if needed, restart Konsole after
maximizing its window)
2. De-maximize the window by dragging down with the mouse *from the right half
of the title bar*
(This happens for any other application too)
OBSERVED RESULT
The top-left window corner snaps to the mouse cursor position. This *only*
happens if the application started maximized, and then it happens repeatedly
until the window is once de-maximized using another method (e.g.
double-clicking the title bar).
EXPECTED RESULT
The relative position of the window and the mouse shouldn't change. This is
required to uphold the illusion that the user is shifting the window around
with their hand.
SOFTWARE/OS VERSIONS
Linux: openSUSE Tumbleweed (also tested Ubuntu 23.04)
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.105.0
Qt Version: 5.15.9
Graphics Platform: Wayland
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