https://bugs.kde.org/show_bug.cgi?id=454779
Bug ID: 454779
Summary: QMenus mispositioned using Wayland QPA with multiple
monitors when top edges of monitors are not aligned
Product: kwin
Version: 5.24.5
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: b...@gmx.com
Target Milestone: ---
Created attachment 149423
--> https://bugs.kde.org/attachment.cgi?id=149423&action=edit
screenshot of mispositioned menu
STEPS TO REPRODUCE
1. Connect external monitor
2. Start Plasma Wayland session
3. Open Display Configuration in System Settings
4. Drag representations of monitors such that their top edges are not aligned,
click Apply
5. Open QWidgets application, for example Kate, and open a menu
OBSERVED RESULT
Menu is shown in an incorrect position, for example to the right side of the
window
EXPECTED RESULT
Menu is shown at the clicked location
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.93.0
Qt Version: 5.15.3
Fedora 36
ADDITIONAL INFORMATION
Workarounds:
1. Start Qt application with `-platform xcb` to run with XWayland (not great
due to blurry high DPI scaling)
2. Align tops of monitors in Display Configuration
I cannot reproduce this with GNOME Wayland, so it seems to be an issue in the
interaction between KWin and Qt's Wayland QPA.
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