Every time I start up Baldur's Gate 3 on my M1 Max MacBook Pro the aspect ratio is slightly off and the bottom of the picture is cut off. I go to settings, switch it to an incorrect aspect ratio, then switch it back to 16:10 and everything everything works fine. Then next time I start the game the same thing happens.
Here's a video to illustrate. Ignore the weird colours. Screen capture doesn't show the HDR accurately.