Bug 468734

SUMMARY
Sometimes the lines appear at the screen edge, the last row of pixels, sometimes in Firefox next to a playing video, Sometimes in Kate or other apps there are random vertical shorter lines disappearing again. They are not permanent and disappear often again.


STEPS TO REPRODUCE
1. Use a HiDPI 14in monitor, scale to 125% in Wayland
2. Have fullscreen applications like firefox Flatpak
3. Play Videos on Invidious, open apps

OBSERVED RESULT
There are some 1px wide vertical or horizontal lines at edges of elements like windows, boxes or PiP windows, that are colorful, sometimes flickering or persistent.

EXPECTED RESULT
No weird lines

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 37
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.9
Kernel Version: 6.2.10-200.fc37.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × AMD Ryzen 5 PRO 3500U w/ Radeon Vega Mobile Gfx
Graphics Processor: AMD Radeon Vega 8 Graphics