Created attachment 157070 [details]
Trace information collected using similar steps to those on the Arch wiki

SUMMARY
When closing a window of an already-running app on a second display, plasmashell crashes. From what it seems, it is just the desktop (widgets and background) that crashes.


STEPS TO REPRODUCE
1. Open a window (Firefox is confirmed to crash somewhat consistently, but Alacritty is how I found this bug)
2. Open a second window of the same app and move it to another display (I have only tested with a display of a different size and refresh rate, specifically 1024x768@144hz interlaced as the secondary display with 1920x1080@165hz as the primary)
3. Close the window on the second display using the "x" on the preview in the taskbar (right-clicking and clicking "close" also works)

OBSERVED RESULT
Plasmashell crashes

EXPECTED RESULT
The windows close how they should

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Artix Linux with Kernel 6.2.1-zen1-1-zen
KDE Plasma Version: 5.27.1
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION
The app you are doing this with must have focus, specifically the window on the main display. This may also work the other way around, but I only have the taskbar on my main display.