I don't remember this happening at all in v1. In about half the fights, the AI will play a move card and just stand still. Doesn't even turn. And he's not stalling because when he runs out of moves he passes (I've already passed). All he accomplishes is going second next round.
I do recall seeing the ai do this on numerous occasions in V1. However, I must admit that in V2 that number seems to have increased noticeably.
I doubt this is going to significantly affect the game to be fair but if it bothers people a lot it might be worth fixing.