When Mac steals Frank's van, as he is turning the van around, he bashes the van multiple times into the driver's side of the car of the person that Frank thinks is Bruce Mathis. The camera cuts away showing Charlie and Dennis, but as it cuts back to Mac, the van is now behind the car, and the driver's side of the car shows no damage.
When Frank and Dee break into the apartment to plant a baby monitor, the hand of a crew member is visible on the left three times.