Other mistake: When Ariel is at the dinner table with Eric and Grimsby, Ariel takes Grimsby's pipe and blows it in his face, yet when he wipes his face there isn't any black stuff on his hankie.
Other mistake: When Nick is in the spoon, the milk around him turns green.
Other mistake: In the Italian dub, the kids at the birthday party vociferously ask for their hero; Tree Man instead of the original He-Man. He-Man was very popular in Italy too at the time, it was not an obscure reference that needed any adaptation - not that there is or was any character named Tree or Tri Man in Italian pop culture.
Other mistake: In the beginning of the scene where Gage is killed by the Orinco truck, the truck leaves the plant. The number on the trailer is marked T-80. In the scene, the truck rolls over in the accident. In later scenes where Rachel hitches a ride home with another Orinco truck, the number on the trailer is also marked T-80.