When Steven ask the Crystal Gems if there tired, the left part of Garnet's uniform is white instead of pink.
At the end of the episode, the same thing happens
When Jasper (in Malachite's Realm) tries to catch Steven, the black lines of her skin's marks are un-erased, making it look like she's wearing gloves.
Steven's mouth briefly disappears while he was trying to tell Garnet about his dreams. In the same scene, the right half of Garnets uniform is white instead of pink.
When Garnet says "Steven, you're still awake!", her shoulder pads are blue, and her uniform is miscolored.
During the Malachite's Realm scene, the triangle on Lapis' skirt disappears before she is dragged under the water.
Jasper's reflection in Malachite's realm shows that her leggings are red instead of being a greenish color.