When you are meeting terry for the first time you can try to leave, which prompts you with "I should probably talk to Terry some more", but you can still leave the building. Working as intended?
I think I saw a word repeated twice in one of the casino's lobby dialogues on day 1 or 2. Can't remember who exactly but it would have been someone in the left part of the lobby, before the room with the three queues.
EDIT: Nevermind, I can't find it after replaying through the start of both the first and second days of the investigation. Maybe it was on the third?
In the final map (office surprise party) once the screen has zoomed-in the mouse click becomes misaligned : it selects the tile that woud have been there if the screen wasn't zoomed-in. For example if you click roughly 3 tiles away it selects the 4th tile away.