In one of my any% attempts, I had this obscure bug occur. I entered the door to the rosetta room, but the instant I pressed up, the room I was in got reset. There wasn't any fade in or fade out, the room just instantly reset. What's interesting is that after resetting, the room contained black holes which means it really did count as the second time I was in that room.

I've never seen this bug before, so I'm not sure if it's already known. I have no idea what caused it or how to reproduce it :)

Thought I'd share it here. Apologies if this is already known!

It's a known glitch. It can be recreated by rotating at the exact same time as entering a room. It also sometimes happens randomly though.

Ah, interesting. Thanks for the reply!