Continuity mistake: When the Drapes are singing to Allison/Baldwin/Mrs. Vernon Williams, the song, "Gee, I Love that Girl" in the speeding cars, Hatchet-Face's gold earrings are on, then off, then on again. They are seen again in other scenes.
Continuity mistake: Near the end of the movie, when Snow White has already been tied up by Lord Malice, the Dwarfelles come to rescue her. As the Dwarfelles are beating up Lord Malice, there's a quick shot of Snow White again and she is untied and has her hands covering her cheeks. Next shot, the fighting between the Dwarfelles and Lord Malice continues and Snow White is again tied up.
Continuity mistake: When the Jetson family leaves Earth and is headed towards their new home for the rest of the movie, George and Jane switch places when Jane leans over to kiss George.