https://bugs.kde.org/show_bug.cgi?id=480511
Bug ID: 480511
Summary: On Wayland, during Drag'n'Drop, if the cursor hovers
over a non-target window, it quickly receives focus
and rises above the others
Classification: Plasma
Product: kwin
Version: 5.92.0
Platform: Other
OS: Linux
Status: REPORTED
Keywords: usability, wayland
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: xalt7x.serv...@gmail.com
Target Milestone: ---
Flags: Wayland+
Created attachment 165330
--> https://bugs.kde.org/attachment.cgi?id=165330&action=edit
Demo of the window raising issue during drag-n-drop on Wayland
SUMMARY
Currently, on Wayland session drag-n-drop should be performed without delays,
otherwise there is a risk, that some other window will receive focus and raise
above the target window (so user will need to use Task Switcher or Task Manager
to re-activate required window). When cursor with an item stops movement and
holds/hovers over any window, it quickly receives focus and raises. Such
unexpected focus change doesn't happen on X11 session.
STEPS TO REPRODUCE
1. Launch some application (e.g. Firefox) and maximize its window
2. Launch 2 instances of Dolphin File Manager.
Resize and place their windows at some distance from each other (for example,
near opposite edges of the screen). Both windows should be visible (raise/float
over Firefox window but without activated "Keep Above Others" option)
3. Select file from one Dolphin window and start dragging it to another Dolphin
window
4. On a midway, hold cursor over Firefox window
OBSERVED RESULT
Firefox window receives focus and raises above second/target Dolphin window
EXPECTED RESULT
Firefox window doesn't "steal" focus when cursor hovers over it
SCREENCAST
Please see file in attachment or https://youtu.be/jMoGk-C8L_Q
SOFTWARE/OS VERSIONS
Linux: Fedora Kinoite 40 (Rawhide)
KDE Plasma Version: 5.92.0
KDE Frameworks Version: 5.248.0
Qt Version: 6.6.1
ADDITIONAL INFORMATION
It's reproducible on older KDE Plasma releases as well (tested 5.24.7 and
5.27.10).
Initially, it was reported at https://bugs.kde.org/show_bug.cgi?id=440534 but
since this issue has a slight difference (it happens specifically when user
holds cursor over window), Nate suggested to create a new bug report.
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