Bit of an odd bug in the AC app (which also shows on the navbar temperatures too), where the car seems to be telling the head unit the temperatures in celsius and those values are then being converted from fahrenheit to celsius which is resulting in the wrong number in the AC app and the navbar.
The videos I've uploaded here shows the issue better than I can explain it! System information is also uploaded there.
https://drive.google.com/file/d/1DMTEKXEMaBI9jckOOBRn6i_CfVPZ9fVD/view?usp=sharing
One video was taken with the units set to celsius (where the minus values are showing) and the other set to fahrenheit (when the correct celsius values are showing). Yeah, it's confusing to explain!