*fixed report for MC-240088
When starting up Minecraft, the game is automatically on fullscreen with a low resolution. In the Option > Video Settings, it says that fullscreen is off.
My device has a 2560 x 1600 display while the fullscreen is on 1440 x 900, AND the Fullscreen Resolution says Current.
I can't seem to reproduce this in 1.17.1 or 21w44a. Did you happen to be using any modifications at the time of when this issue occurred?