Good question. I know I've spotted inconsistencies, but I simply dont know the She-Ra series as well as I do He-Man so I cant recall all the episode titles and/or exact circumstances. I know there have been times where Bow's vest or Swift Wind's mask is the wrong color. The only one I can think up is in General Sunder's debut episode, when She-Ra is giving him her "turn good" speech, her eyes look badly animated for a moment.
Maybe not a technical error, but in "Loo-Kee Lends a Hand" after all the discussion of how everything is frozen, Adora's hand oddly clenches up to hold the Sword of Protection BEFORE He-Man frees her from the freeze spell.