Continuity mistake: When Bugs is having a laugh contest with Witch Hazel, you can see the wall behind him has a hole in it. But in a close-up of Bugs, the window has gone.
Continuity mistake: When Witch Hazel tries to attack Bugs with her meat cleaver, Bugs runs off to the castle and you can see the cleaver in the ground. But when she calls for her broomstick to come over to her, the cleaver has gone.
Continuity mistake: When Bugs is relaxing in the cauldron, he looks at a recipe book on a tree stump, which wasn't there when he first came to the cauldron.
Continuity mistake: When Witch Hazel is chasing Bugs Bunny up the castle tower, Bugs throws a stone through the window before Hazel appears from behind the curtains. When we see Bugs dressed up as Romeo, the glass panes have disappeared, and when we see Hazel dressed up as Juliet, they are back again.