Widget Settings causing plasmashell coredump

[fishears]

Accessing "Units" in Weather Report Settings from the System Tray causes a plasmashell coredump

Steps to reproduce:

1. Right-click the applet in the System Tray
2. Select "Configure Weather Report..."
3. Click on "Units"
4. Perform any other action in settings e.g. click on "Appearance" or "About" or any other section
5. Click on "Units" again, coredump occurs

Expected behaviour:
User is able to adjust Units parameters without a coredump.

coredump.txt

Operating System: Manjaro Linux
KDE Plasma Version: 5.20.0
KDE Frameworks Version: 5.75.0
Qt Version: 5.15.1
Kernel Version: 5.9.0-3-MANJARO
OS Type: 64-bit
Processors: 4 × Intel® Core™ i5-2300 CPU @ 2.80GHz
Memory: 7.8 GiB of RAM
Graphics Processor: GeForce GTX 750 Ti/PCIe/SSE2