Revealing mistake: When Iola's quilt shrinks in the dryer at the end of the episode, the individual squares do not shrink. Instead, there are simply fewer of them in each direction.
An Ill Wind - S3-E8
Revealing mistake: After they break out of the basement, Iola remains down there, with no indication that she is coming up. However right after we can see her skirt on the staircase, waiting to make her entrance later in the scene.
Revealing mistake: When Thelma sees that a strange woman is in the grave intended for her, she smacks Carl's headstone with her purse. The headstone can be seen to move slightly under the blow.
Pinup Mama - S6-E17
Revealing mistake: Vint supposedly hits his thumb with the hammer, but it is clear that he hits a part of the wood nowhere near his thumb.
Revealing mistake: When Naomi's dress gets caught, it's making a noise as though the machine is eating the dress but the dress isn't even moving and the needle isn't moving up or down. (00:17:10)
