Continuity mistake: Lupin's car windows are blown away in the car chase, and he and Gingen break all the remaining shards of glass from them. They then return again when lupin pulls up to the princess' car, then disappear in the following shot.
Continuity mistake: Before going to bed, Scrooge takes off his slippers and puts them by the side of his bed. But when he is disturbed by the singers, the slippers and the pillows he is resting his head on have disappeared.
Continuity mistake: When Bugs Bunny is reading from the Christmas stories book to Clyde, you can see Clyde is sitting by the fireplace and there is a long red stocking on the right hand side of it. After a quick cut to Bugs reading, we return to Clyde and the long red stocking has disappeared.