Continuity mistake: When Pluto takes Persephone away to the Underworld, her flower chaplet remains lying on the ground up above, and the elves find it. However, when they arrive in the Underworld and Pluto carries Persephone to the throne, her flower chaplet is still adorning her head, but then it vanishes before he crowns her a queen. (00:03:20)
Continuity mistake: When Peter Pig and Donald Duck are dancing outside the "Idle Hour Club", you can see the door to the Club is open, but when the camera cuts to Donald, the door is shut, and in the next shot, the door is open again.