SUMMARY STEPS TO REPRODUCE 1.switch to plasma-wayland 2. take neccessary steps to make firefox run in wayland session (GDK_BACKEND etc) 3. launch firefox 4. move firefox to screen 2 5. quit firefox 6. launch firefox again OBSERVED RESULT Firefox opens in screen 1 (smaller monitor in my case) instead of 2 EXPECTED RESULT Firefox should run in screen 2 SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20210616 KDE Plasma Version: 5.22.0 KDE Frameworks Version: 5.83.0 Qt Version: 5.15.2 Kernel Version: 5.12.10-1-default (64-bit) Graphics Platform: Wayland Processors: 4 × Intel® Core™ i5-5200U CPU @ 2.20GHz Memory: 7.7 GiB of RAM Graphics Processor: Mesa DRI Intel® HD Graphics 5500 ADDITIONAL INFORMATION I have also tried to set window rules etc without any luck.
This bug was reported against an outdated version of KWin.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.