I talked to all 4 owls, and went back to the rotating owl head place, and all the owls were there, but the secret door won't open

I have 31 cubes and anticubes, so this is the last place I need to visit

edit: I did the glitch where you can enter the owl room backwards. but I still don't have gold on the room with the first rotating owl

I'm having the same problem. I found all the owls and nothing happened. We accidently glitched the puzzle thinking it was the fix and now were stuck.

For what it's worth, there is no Cube or Anti-cube in that room, the owls just unlock the door to the hidden anti-cube room.

Still annoying, but at least you can keep mental track of that room being "done", and there are no achievements (or any other hidden reason, as far as I can tell) for you to finish that room once you've gotten into the inner chamber.

Apparently you can get through the hidden door the owls are meant to reveal by the following glitch:

At least then you can grab the final cube piece and all.

I did the glitch accidentally also, but the door still opened properly when all 4 owls were there. Were you standing on top of the statue? Maybe you have to ... & maybe it has to be facing front before everything triggers properly. I don't know, but you're not missing out anything vital apart from just that map square going gold.

Maybe you're just not smart enough to figure out the puzzle.