Revealing mistake: The film contains a few animation glitches which usually only last a frame or two. These could have been fixed during the film's digital restoration, but were left in, presumably because the restorers didn't want to alter a single detail of the original animation. A prime example occurs when Snow White is leading the animals to the Dwarfs' cottage. As she approaches the door, a fawn steps in front of her, and its head completely disappears for one frame.
Revealing mistake: A disgraced Willy Wallace is relegated to a terrible desk in the bowels of the Morning Star. Some guy puts a ladder right above him, and various pictures start falling on him, who has already had used paper cups dumped on him by his terrible coworkers. During this sequence, the cup is glued/tacked onto Fredric March's hat in close-up, standing perfectly upright as opposed to the tilt of the other camera angle.