When the customers are getting ready to pay, at about 19 minutes, Connie Prince stands up and her coat is on her arm. One second later, she is in line to pay wearing her coat.
When the passengers leave the diner and board the bus, they get in on the wrong side. They enter on the side where the bus driver would normally be seated.
When Haley reveals himself to Ross in the final scene, a shadow from the crew moves across his hands and hat from right to left.