Mrs Kravitz spills the flour forward from the measuring cup she is holding. In her next frame, her right sleeve is covered with a lot of flour that didn't land there before, and her cup has flour all over again.
After the power goes out, Aunt Clara hears the doorbell ring. But doorbells of the day were powered by transformers supplied by household current, so it shouldn't have worked. The writer should've had the Kravitzes knock on the door, instead.
Mrs Kravitz is on the floor, fainted. When her husband picks her up, she helps by raising her body towards him. But in the next frame, he is carrying her limp and unconscious.
Larry never questions the shoes moving by themselves, nor is it explained to him by Darrin or Samantha how it happened.