Created attachment 170042 [details]
Full backtrace

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SUMMARY
System Monitor crashes when you go to the Processes tab, enter a search in Tree View, and then click on some of the displayed processes. Occasionally it is not reproducible, but it is pretty easy to trigger usually.

STEPS TO REPRODUCE
1. Launch System Monitor and go to the Processes tab
2. Enter a search. I used "kwin"
3. Switch to Tree view
4. Click on any of the processes in the tree.

OBSERVED RESULT
System monitor crashes after clicking on a process in the tree

EXPECTED RESULT
System monitor should not crash

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.0.5
KDE Frameworks Version: 6.2.0
Qt Version: 6.7.1
Kernel Version: 6.9.3-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 3900X 12-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3090/PCIe/SSE2
Product Name: X570 Taichi

ADDITIONAL INFORMATION