When Pivert is about to climb out of the bubble-gum vat for the first time, the ladder is already smeared with green goop.
During the boat escape sequence the headlamps of the car are on, but the rear lamps are not.
Fares and his thugs are not really speaking Arabic but mumbling something instead.
When the horsemen of the Republican Guard are escorting the car, we hear the music of the band. If we hear the music at that moment, the horsemen have no music instrument in their hands: the characters are supposed to hear a music that could not be produced. Actually, if the French Republican Guard has cavalry regiments and a mounted band, the soldiers we see in the movie are not from the band, even if the director try to show a band.