In local play, if a player is buying something from the store, other players can control the store's cursor as well. This can cause some annoying misbuys unless you tell everyone else to put down the controller when you are shopping.
Not gamebreaking, but I'd consider it a bug.
p.s. I LOVE the game. Having our second local party this weekend, and I'm a 20-something adult with a baby, I don't usually have a lot of time for this kind of thing.
