When the attorney is trying to get Deeds to sign the power of attorney, while Deeds is being fitted for a new suit, a vest disappears and reappears.
On the way out in the rain, Deeds closes the gate twice.
When Deeds is interviewing the farmers and one of them gives him a sandwich, he takes a normal-sized bite out of it, which shows as he holds it afterward. However, the bite is much smaller a few minutes later when the police come in and walk up to him.
The position of Deeds' hands change during the board meeting, after the firetruck goes by.
When waking up from his bender, Deeds' hair changes.
When Babe Bennett first goes to the witness stand in the trial scene, she is carrying a small black purse. When, by the order of the judge, she returns to her seat, she does not bring the purse back with her.
While she does walk back to the seat without her purse, the bailiff carries it while walking her back to her seat and hands it to her editor friend who is with her.
When Longfellow Deeds is preparing for his "engagement" lunch, he has a pipe in his hands or mouth throughout (e.g., sliding down the banister, discussing the utensils, flowers). After he "practices" the seating with the butler, he gets up and leaves, and the pipe seems to have disappeared. However, a careful look shows the pipe is actually in his hand as he runs out.
When Deeds announces he is giving his money to the farmers, one of the headlines of the newspaper reads backwards.
When Mr. Deeds is playing the tuba, the acting is out of synchronization with the sound.