Chapter Seven: The Bite - S3-E7
Revealing mistake: When Joyce and Hop get out of the car at the fair, you can see Hopper's, Smirnoff's, and Joyce's breath as if it was cold out, despite being a July 4th fair. The grass looks dead as well. (00:30:20)
Stranger Things (2016)
1 revealing mistake in Chapter Seven: The Bite - chronological order
Starring: Winona Ryder, David Harbour, Millie Bobby Brown, Finn Wolfhard, Dacre Montgomery
Chapter Two: The Weirdo on Maple Street - S1-E2
Factual error: When Chief Hopper and his fellow patrolman are standing over the lake, Hopper has a radio on his belt. The radio is a modern Motorola walkie talkie and at least a decade newer than it should be.
More trivia for Stranger Things
Chapter Four: The Body - S1-E4
Question: Where did the body of Will come from? And why was it stuffed full of cotton?
Answer: The body was fake, made by the scientists at Hawkins Lab in an attempt to cover up his disappearance and the existence of the Upside Down.