https://bugs.kde.org/show_bug.cgi?id=473524
Bug ID: 473524
Summary: Menu flashing on desktop context menu with fractional
scaling
Classification: Plasma
Product: kwin
Version: 5.27.7
Platform: openSUSE
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: kde.b...@cricalix.net
Target Milestone: ---
Created attachment 161054
--> https://bugs.kde.org/attachment.cgi?id=161054&action=edit
Video showing menu issue
SUMMARY
Fractional scaling causes menu flashing/tearing as the mouse moves over the
menu entries. It's almost as if the menu is being raised over itself on
highlighted segment at a time.
STEPS TO REPRODUCE
1. Use Wayland
2. Use one 1440p monitor, one 2160p monitor
3. Set the 2160p to 150% scaling
4. Right-click on desktop, move cursor over menu
OBSERVED RESULT
See attached video for better description than I can provide with words.
When pressing Print Screen to open Spectacle to take a static image, the areas
the mouse has not moved over vanish, leaving holes in the menu (the windows
below it are shown).
EXPECTED RESULT
Behaviour like with no fractional scaling - no flashing, no holes in the menu
etcetera.
SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20230817
KDE Plasma Version: 5.27.7
KDE Frameworks Version: 5.108.0
Qt Version: 5.15.10
Kernel Version: 6.4.9-1-default (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor
Memory: 31.2 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3060 Ti/PCIe/SSE2
ADDITIONAL INFORMATION
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