YMMV / Stranger Things S 3 E 7 Chapter Seven The Bite

• Continuity Snarl: Technically: when Steve and Robin are at the water fountain outside of the theater, they talk about Marty's mom having the hots for him in 1955... except, if you pay close attention to the sounds of the film when Dustin and Erica realize they left, the film had only reached the point where the Libyans showed up (you can hear Einstein whining in fear).
  • There's an outside possibility that they watched the whole movie, then went outside long enough for the movie to restart and reach that point.