Other mistake: When Harold goes to kill his father, we see his dad on the seat moving each time we hear the hammer, but if you look at his head, you don't see anyone hitting him at all.
Kugelblitz - S3-E4
Other mistake: When the sequence shows different places that Sissy and Harlan move to, it lists "Tampa Bay, Florida, 1969." The name of the city is Tampa... Tampa Bay is a much larger region of Florida that includes Tampa. While they could live in the Tampa Bay area, all of the others list the names of cities/towns. (00:01:53)
Suggested correction: That's not a mistake. They very well could have lived in the Tampa Bay area without specifically living in the city of Tampa. Just because the others are cities, doesn't mean it is a mistake.