Deploying Unity app to Augmented Reality headset results in a flipped/mirrored view - image attached

I've recreated an example of what it looks like as I don't have access to my kit rn (will in a few hours):

This only happens when I change canvas' render mode to Screen Space - Camera/Overlay. World Space is fine. Not sure how to go about fixing it as it's the not the whole view that's rotated - it's split down the middle, then flipped weirdly. Anyone know of any potential fixes or encountered this problem when using AR headsets? I'm using Dreamglass Air btw