Other mistake: The traveling camera used during the opening credits is not positioned correctly; it is tilted to the right, causing the whole scene to be crooked.
Other mistake: In the 1946 MGM film "Good News" - there is a minor flub in the last musical dance number -The Varsity Drag. About 131.13 into the film- a woman dancer wearing a pink dress - just to the left of the screen- stumbles forward and almost falls onto her face while dancing. They left this scene in for some reason. (01:31:10)
Other mistake: When Anna and her fiancee arrive for tea, the fiancee is put in the living room while Anna and Lucy, in the kitchen, talk about the ghost; as they leave the kitchen, Anna heads right, which is wrong - the living room is to the left.