When Curly Howard is told by the judge to stop chewing his gum and starts stretching it out, it cuts to a shot of the judge looking over at him and when the scene cuts back to Curly, the gum has turned into a ball that is much bigger than the gum he had.
When Curly Howard tries the catch the parrot with the note he takes a hammer and hits the first row of jury knocking them out but not the second row because Moe Howard stops him, moments later the back row is knocked out.
When Moe Howard and Larry Fine are playing tic tac toe on the chair, the final chalk marks they place on the chair before the lawyer sits on it aren't the same marks as those that appear on the rear end of the lawyer when he stands up after sitting on the chair.
The clerk of court reacts twice to Gail unzipping her dress.
When the reporters take a picture of Gail and the boys, Gail is seen standing in front of them with her hat on, but in the next shot, she is standing behind them and the hat is gone.
Although a real parrot is used in the cage, when it "escapes" and flies around the courtroom, it is an obvious dummy being bobbed up and down by a string or wire.
The court clerk (James C. Morton) appears to open his mouth early, as Curly launches the bass bow. This is a result of the shot being shown in reverse--the bow was actually in the clerk's mouth first, then pulled away, then the film was shown in reverse.
When Moe Howard is turning the wheel on the letterpress with Curly Howard's head inside it, it is clear it's not his head, but a dummy one.
Larry Fine's cries of agony after he accidentally smashed his violin were clearly dubbed in later, as his lips do not move to the words.
When The Three Stooges begin playing music, the mouth organ is heard before Moe Howard places it in his mouth.
When the prosecuting attorney stands up to suggest Curly Howard testify to what he saw (after sitting down on Moe Howard and Larry Fine's tic-tac-toe game), he clearly is not moving his mouth to the words, which one should be able to tell when he turns his head to the right.
Throughout the short, the judge can be heard banging his gavel several times for order, but in the close-up shots, he is not seen holding it, which explains why the banging was dubbed in during post-production.
Curly Howard clearly cringes before pulling the trigger on the gun used as evidence when it fires the first bullet. He was obviously supposed to be startled when it went off (Curly accidentally shot himself in the foot as a youth, possibly giving him a fear of firearms).
When Moe scolds Curly for disturbing the courtroom and plans to poke Curly's eyes, Curly Howard does not do the eye-poke block in time, so Moe Howard can be seen pausing for a few seconds.
During the "take off your hat" scene, Curly Howard misses his cue a few times when he is told to raise his right hand.