Goofs

When Oskar breaks the teacher's glasses, the pattern of spots on his face change.

When Oskar falls down the stairs, the Persil logo on the boxes changes between shots.

In one scene at the table, Agnes holds a fork in her left hand. In the next shot, she holds the fork in her right hand.

When Agnes eats eels, a brown bottle disappears in one shot. The position of her empty glass and Alfred's beer glass change in the same series of cuts.

While the German soldiers attack the Polish post office, one fires an MG42 machine gun from his shoulder. The German army didn't use that weapon before 1942. It's also not supposed to be fired while standing.

When Oskar and Maria are at the beach, a 1970s cargo ship is clearly visible in the background.

When painting the picnic scene on top of the bunker roof, the remains of Mulberry Harbor, in Arromanches, France, are visible in the background. The artificial harbor was set up days after the D-Day landing, and the scene is set way before it.

At the end of the circus scene, the band inside plays "Work Song", written by Nat Adderley in 1960.

When Oscar shouts to shatter the glass with the circus in Paris, the glass of the German soldier breaks. However, all the other glasses on the tables remain intact.