Created attachment 161054 [details]
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