https://bugs.kde.org/show_bug.cgi?id=495296
Bug ID: 495296
Summary: Visible cursor position out of sync when accessing
toplevel menu bar of a maximized JOSM window
Classification: Plasma
Product: kwin
Version: master
Platform: Neon
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: xwayland
Assignee: kwin-bugs-n...@kde.org
Reporter: jan.rathm...@gmx.de
Target Milestone: ---
SUMMARY
When running JOSM (Java app, Flatpak, XWayland) in Wayland session and trying
to access the toplevel menu bar while having its window maximized, there is an
out of sync situation of the visible position of the mouse cursor and the
position that the app (JOSM) actually is "seeing", making it hard to actually
use the menu.
STEPS TO REPRODUCE
1. Run JOSM (Flatpak) in a Wayland session, build from master.
2. Maximize the main window.
3. Click on an element of the toplevel menu bar (File, Edit, View etc.).
4. The menu only appears as long as the left mouse button is being pressed,
otherwise it will just flash briefly.
5. While holding the mouse button pressed and the menu is open, hover around
with the cursor until one of the menu items gets highlighted.
6. Release the mouse button. The menu will now stay visible.
OBSERVED RESULT
The visible cursor appears to be somewhere else than over the highlighted item
– out of sync with the cursor position as "seen" by JOSM. Activating/launching
a menu item while it is highlighted works as usual despite the visible cursor
being somewhere else.
EXPECTED RESULT
* When clickling on an element of the toplevel menu bar, the menu should stay
open instead of just flashing briefly.
* The visible cursor position should stay in sync with the one that the app
sees: Highlighting/ Activating a menu item should work when the visible cursor
is actually placed at the respective item, not when it is placed somewhere
else.
SOFTWARE/OS VERSIONS
KDE Plasma Version: 6.2.80
KDE Frameworks Version: 6.8.0
Qt Version: 6.8.1
ADDITIONAL INFORMATION
Reproduced with the following setups:
* Plasma 6.2.80 build from master atop of Kubuntu 24.10 on real HW.
* Neon Unstable installation with current updates in a Gnome Boxes/QEMU VM.
Could NOT reproduce with one of the following conditions:
* Plasma X11 session
* JOSM window being not maximized
* Wayland session on a VM with Kubuntu 24.10 and distro packages: Plasma 6.1.5,
Qt 6.6.2, Frameworks 6.6.0
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