When the door of the lift opens to reveal Ecki and Sven kissing, Ecki is wearing a shirt, though he is previously seen to have removed it in the lift.
When Ecki leaves home by bus he sits alone in the last row. When the bus overtakes a tractor the bus is shown from behind and one can see other people sitting in the last row.
When Karl places the ball on the spot at the end and then walks off the ground, the playing surface is completely fresh and unmarked as it would be before a game, not after a game.
Ecki wears a shirt of the same colour as the rest of the team despite being goalkeeper. Goalkeepers should wear contrasting tops to differentiate themselves from the rest of their teams.