Thanks for this works, happy new year man!
Temporary fix for now: in SystemARM/User.ini replace
withCode:JoyZ=Axis aTurn SpeedBase=250.0 JoyR=Axis aLookUp SpeedBase=250.0
Then you can use the in-game "Invert mouse" option to invert look. I haven't extensively tested if this works correctly though, so you might have to change the 250 in there to a smaller/larger number according to how sensitive you want it to be.Code:JoyZ=Axis aMouseX SpeedBase=250.0 JoyR=Axis aMouseY SpeedBase=250.0