At the very end of the film, when Maggie and Ike get married on their own, they are with a priest and no-one else. Yet when they kiss and the camera goes round them totally...you can't see the priest anywhere in a matter of a few seconds....then when all their friends come over the hill to them, the priest is back...strange that?
Well, it's not like the priest was hovering over them while they kissed. And how do you know they panned the entire scene? Technically, this is not a slip-up.