I was doing another run when the castle bugged out; the felkin dash wouldn't unlock even after several tries, some of the secrets wouldn't drop properly, and when I returned to the starting area because I missed the first fox token, it had despawned and I couldn't get all the secrets.
The bunny's topping animation seems to have a glitch where two models of Liam are overlapped.
The werewolves are no longer all tamed at the same time and the tamed mating speed is properly capped, but the game still always plays the text and forces the player to stand still after taming one, which gets a little annoying since they also no longer seem to stay tamed when returning to an area.
The riddles seem to have stopped resetting when start a new game again.
Also I'm not sure if this is intended but the green slime inside of the hotel isn't there, and the room it was previously in is now noticeably more empty than the other rooms due lacking any extra background features like the other rooms; furthermore, with the green slime that was outside of the castle being replaced by the Invisible Lurker, the green slime outside of the hotel is now the only instance of a green slime in the game.