When the movie star picture cards are torn off the wall, the number of cards still on the wall constantly changes. Sometimes more cards are still on the wall than in the shot before etc.
At the picnic a close-up shows Brigitte sitting down at the spot where the napkin was just removed by Christl. But after the cut to medium, Brigitte is back on her haunches, and now lands on her knees.
When Brigitte discovers the broken gramophone record, the piece in her hands changes from small to large between shots.
When the group boards the boat, the men are in shirtsleeves and the only item carried on is the record player. Upon disembarking, Wolfgang now has a jacket on and is carrying a suitcase.