Other mistake: Tsubasa's diving header hits the post square in the front in close-up, but in the wide shot it rolls out for a goal kick to the right of the post. (00:09:20)
Other mistake: When Teela is at Snake Mountain, she overhears TrapJaw saying how Skeletor's electrical creature will control all of the machines at the palace. When Teela returns to He-Man, she says that the creature Skeletor created is called Byte. There's no way for Teela to know the name of the creature, since TrapJaw never referred to it by name. (00:14:24 - 00:15:20)