@Lars,
Drivers were updated yesterday and the game should run in 'normal' mode on non-RTX machines.
Further to this, I've just tried to load my own World and cannot join that. Selecting it from the world list locks me at that screen, just as above. Buttons continue to react but have no effect. Escape does not get me out. Only option is Alt-F4.
This may be the same bug as MCPE-69581
Set to Peaceful, Save & Quit, reloaded and set to Normal - mobs are back.
Update: They're not back in anything like the numbers they should be. Not a single one around my village and only a handful outside.
Same here. It's like the chunk I am working in doesn't save and I have to use Alt-F4 to close Minecraft.
If I walk away from the chunk I'm building in and then quit, the changes save more often than not.