Continuity mistake: In the "Mickey and The Beanstalk" segment, the Golden Harp is locked inside a chest and has 19 strings. When she is on the table and singing to Willie, she has only nine strings.
Continuity mistake: Bongo the bear, riding in a car of the circus train, looks out the window. There are four vertical bars on the window - but when seen from outside the train, it has six bars.