Other mistake: When the clock strikes 8 o clock, the 11 (XI) on the clock reads 12 (XII) in roman numerals. This is just in-between the scene with the mice making Cinderella's ball dress and the scene where the carriage arrives at the home to pick the stepmother and stepsisters up for the ball. (00:36:50)
Other mistake: When Donald crashes his car, a tire comes loose and rolls toward Chip and Dale. As the tire falls over them, Dale disappears for a fraction of a second.