Oh dear, I think I broke it. There's that puzzle in the spoilery postgame area where you have to hold down the plants using rocks, because they regrow too fast to cut them all in one go... except turns out one of the plants doesn't give a damn. Even better, thanks to the placement of that other plant on the left I can't pull the rock back out of there either.
I've seen a few bugs here and there, nothing too bad, but that one makes things straight up unwinnable without reloading a save. You probably should get that fixed.