Joe's coworker reaches down to pick up the movie tickets with his right hand, but the close-up shows his left hand grabbing them.
The first time Joe's card about Sally wearing a flower is shown, its text is in straight lines, but in the second close-up as he remembers it in the movie theater, the lines have been written diagonally.
When Joe shaves Harry the morning after the movie theater, the coverage of chin and cheeks by soap varies inconsistently through parts of the scene.