Tintin and the Picaros: Part 1 - S2-E8
Other mistake: After Manolo has told Haddock that the windows don't open, Manolo goes to leave and slips on a banana placed in the doorway. The banana's position in the doorway would not be possible. The banana landed on the floor after Haddock fell over the table in the hotel room and spilled the contents of the fruit bowl all of the room and then Manolo entered the room a second later. When Manolo opened the door, he would have pushed anything in front of the door out of the way. (00:10:25)