I play the game "Rocket league sideswipe", which renders like this after the update to oneui 7.
The reason for this is the removal of the "full screen apps" setting, that allowed me to make any app use the phones aspect ration even if it isn't fully supported.
I used this setting all the time, but after the update, I can't find it anywhere. Not even in developer options. Is there any way I can reactivate it?
It is genuinely frustrating, because I can't see as much of the game and when my finger slides into the black bars, I can't move the joystick, which in a fast-paced game like rl sideswipe is a very big deal.
Below you can see the settings before and after oneui 7 (note that these are two separate devices, so the aspect ratios are different.)
Before:
After:
