Other mistake: Misaki reminds Ishizaki about the next phase of the selection for the team. When he replies, someone drew eyelids on them, but the same color of the white of his eye. (00:02:30)
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)