Created attachment 149616 [details]
Zip containing the gdb backtrace and the coredump info

SUMMARY
plasmashell seemingly crashed after locking the screen and going to sleep, but did not do much after resuming again and i am not sure when it crashed, like before going to sleep or after

after having resumed, it was in the following state: black screen, mouse still worked, but nothing could be opened / closed / modified) 
and restarting kwin_wayland made it work again from a different tty (trying "kstart plasmashell" did not work, see attached file "kstart_plasmashell" in the archive)

STEPS TO REPRODUCE
i am not sure about reproduction, but it sometimes happenes when doing the following steps
1. be logged in and have some windows open (in my case its some konsole windows and firefox)
2. wait for lockscreen to show up
3. wait for going to sleep
4. try to resume from sleep

OBSERVED RESULT
KDE Crashed while trying to go to sleep (suspend to ram) after having locked the screen

EXPECTED RESULT
KDE locking the screen and successfully going to sleep (suspend to ram)

SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.94.0
Qt Version: 5.15.4
Kernel Version: 5.17.9-1-MANJARO (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 9 4900H with Radeon Graphics
Memory: 15.1 GiB of RAM
Graphics Processor: AMD RENOIR

ADDITIONAL INFORMATION