Hi,
Making a game on Unity, we saw that the resolution returned by the functions like Screen.currentResolution or Display.main.systemWidth and Display.main.systemHeight don't set the proper one on Macbook pro M1 2021.
https://support.apple.com/kb/SP854?viewlocale=en_US&locale=ja_JP
In fact, after a dynamic set with those, my screen keeps a 16:9 resolution and black bars are visible on left and right side.
Did you encounter this issue ?