Mrs. Kravitz drops her bowl of soup when she runs out of Samantha's bedroom when she starts getting spots. Later she retrieves it and it is unbroken and full of soup.
When Gladys Kravitz hears Aunt Clara knocking and runs out of the bedroom screaming, her mouth is closed.
Bewitched is supposed to be set on the east coast somewhere around New York City. But when Darrin is standing in front of the police Sergeant's desk, there is a map of Los Angeles on the wall behind him.