I just came across a bug in 0.10.7B. I got the swimsuit from Susan's room, but before I got around to collecting the others, Monday night came around and the elves took it away. When I went back to try to get it again the next morning, the suit wasn't there, but I couldn't leave the room until I had the suit. I was forced to start the morning over again from save.
Also, I'm not sure if it's a bug or just a change, but Snape stopped offering up apparition potions after some point. Not that it matters much after I have the broom and can get out, but when I played the old plot it was always available.
Finally, I want to mention that a lot of the portrait dialogs in the main hall are no longer appropriate for the new plot.