Continuity mistake: In the contract signing scene, Violet and her father are close to Wonka's right elbow, but when the shot changes to Veruca and her father's view, they are further away, then close to Wonka again in a later shot.
Continuity mistake: When Von Aschenbach is dressing for dinner on his first night in the hotel, he makes a great show of placing a red, silk handkerchief in the breast pocket of his white dinner jacket. When he goes down to the dining room, the handkerchief is no longer showing.
Continuity mistake: When Gran first dangles down from the ventilation shaft, the slaver's key ring is too wide to fit through the opening. But when Jim loses his balance and Gran is jerked back into the cell, the key ring is suddenly much smaller than before.
Continuity mistake: One of Mr. Browne's apples falls on the gravy when he is juggling, splashing his face and shirt. Later his shirt is spotless.