Turns out I looked in the wrong place for the answer to this. The solution can be found here:
https://github.com/shayne/hwinfo-streamdeck/issues/53#issuecomment-1036051560
Feel free to lock thread/mark as solved.
In HWiNFO I have the language set to English. Below are my Windows language settings. I tried enabling UTF-8 support which is in beta in Windows 11, though it made no difference.
I use HWiNFO for monitoring my PC stats on my Elgato Stream Deck. After updating to v7.20, there's a strange character that appears for any temperature related probe.
Related screenshot below.
I have report and debug files available but would prefer not to post them until someone asks for...