Loved the game. Wild ride. Only ran into to bugs that were fine once I reloaded my save. Very early after finding the Gate Key I then used it on the big gate, naturally. Then, out of curiosity, I used it on the blue lock where the Business Key should be used. The Blue lock opened up, let me pass through and then locked me inside the Blue Gate that reappeared on the next screen. A quit from the menu and reload of the save fixed this then I just avoided repeating this mistake.
2nd Bug occurred much later in the game, around the first time I experienced running from the ai. Completely unintentionally I ended up in the Crystal Ball Room, only Beatrice was invisible and I could not exit the room. So I believe I somehow ran through the wall into that room. Running west towards the fortune tellers room into the wall passing through. I do not believe there was a door. Quit, Reloaded the save and finished the game.
Thanks and hope this helps, Great game!