1. New players who don't understand the rules of the game. (I saw a topic here a while ago where someone expressed surprise that someone could show the same card to the same player twice.)

2. Trolls guessing their own cards repeatedly because chaos or something (read: they think they're more clever than they actually are.)

3. After an update a while ago, the AI lost most of its I, at least in online games. I don't recall seeing an AI player repeating its own guess, but it wouldn't shock me much.

Yeah, the repeat thing is, in my experience, when a player has left and the AI has taken over for them. One big hint is that there will be a period of time where you are waiting on a player to respond, then eventually they do and it's super-dumb. That's the AI taking over after the real player has dropped out. From then on, the AI will respond super-quick and roll the dice super-quick.

its my understanding you cant make a suggestion in the same room you were already in unless you were brought in by someone else's suggestion. If i'm not mistaken then suggesting the exact same 3 cards in a row would only be possible if 2 other players made suggestions involving your character. which would look something like you suggest something then player right after suggests you in a different room then the next player suggests you back in the first room. when it got to your turn you would both be in the room you suggested in but also have been moved there not by your roll so could again suggest in that room.