Created attachment 140428 [details] Backtrace from running "thread apply all bt full" in gdb SUMMARY Using KWin with Wayland and two monitors; the smaller with with 125% scaling. STEPS TO REPRODUCE 1. Open LibreOffice Writer OBSERVED RESULT KWin crashes, all windows are closed, and the session restarts EXPECTED RESULT LibreOffice opens normally SOFTWARE/OS VERSIONS Linux/KDE Plasma: openSUSE Tumbleweed (available in About System) KDE Plasma Version: 5.22.4 KDE Frameworks Version: 5.84.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION I installed systemd-coredump and then ran the file through GDB and attached it. Hopefully that's useful.
Presumably here: #6 KWin::clamp_row(int, int, int, uint32_t const*, uint32_t*) (left=2, width=-1, right=3, src=0x55ad61860988, dest=0x55ad61860960) at /usr/src/debug/kwin5-5.22.4-1.1.x86_64/src/plugins/scenes/opengl/scene_opengl.cpp:2549 #7 0x00007f29591252c2 in KWin::clamp (viewport=<optimized out>, image=...) at /usr/src/debug/kwin5-5.22.4-1.1.x86_64/src/plugins/scenes/opengl/scene_opengl.cpp:2578
This bug was reported against an outdated version of KWin. We have made many changes since the. If the issue persists in newer versions can you reopen the bug report updating the version number.