Deliberate mistake: Riccardo is a stowaway on the ship, but he was standing on the dock when it pulled away.
A Night at the Opera (1935)
1 deliberate mistake - chronological order
Directed by: Sam Wood, Edmund Goulding
Starring: Chico Marx, Groucho Marx, Harpo Marx, Kitty Carlisle
Continuity mistake: In the scene where Harpo is climbing out of the brig and goes to the open window of the famous aviators, he is shown climbing in the room from the outside with the rope he's climbing on draped across his chest. When he gets into the room the rope has disappeared!
Otis B. Driftwood: You see that spaghetti? Now, behind that spaghetti is none other than Herman Gottlieb, director of the New York Opera Company. Do you follow me?
Mrs. Claypool: Yes.
Otis B. Driftwood: Well stop following me or I'll have you arrested.