When Garnet gets mad at Pearl for attacking Holo-Peridot, Sapphire's gem is on the wrong hand.
When Sardonyx appears, her upper arms are gloved the same way as Garnet's instead of being backless, as seen in "Cry for Help".
When the Crystal Gems first arrive on the warp pad, Amethyst's gem is missing.
When Holo-Peridot first reforms after being attacked by Pearl, the lower portion of her legs and the tip of her feet have their colors switched.
When Peridot flicks Steven, it appears she flicks him with her right hand even though she was flying with her right hand.