Ever since 21w15a, I have had an issue where if I play in fullscreen with the resolution set to 1360x768 @ 60 fps (that of my monitor), I get a strange flickering which makes the game unplayable. I either have to set my resolution to something else like 1080p or play in maximized mode (which also changes the resolution). Sometimes it makes the screen go black every other frame, and sometimes it makes the screen go a bunch of different colors every other frame. It also doesn't happen 100% of the time, just occasionally, but once it starts the only way to stop it is to leave fullscreen, change the resolution, or restart the game.

The closest thing I could find to this is MC-7381, which was resolved as Invalid. However, this is not the same issue, because my screen is not maximized, it is fullscreen.

I believe this is an issue with Minecraft because it didn't do it in 21w05b, so it might be related to the OpenGL 3.2 upgrade?

Btw, I just realized I have OBS open in the background, not sure if that is related, and it is set to record any fullscreen application, but the resolution was set incorrectly to 720p.