In every show, there will always be some continuity errors along the way and Stranger Things is not a stranger from that. Even with the suggestions of the Duffer Brothers about "George Lucas-ing" the series to make it cohesive, the writers of the show is firm that it will not happen.
In case you're wondering, "George Lucas-ing" means editing or modifiyng an already published or released work to have a change apply retroactively to a scene or a show. It is a term coined after George Lucas who treats his Star Wars films like that.
Back to Stranger Things, there are a few continuity errors along the way that weren't able to escape the eyes of the fans. An example of which is Will's birthday which was seemingly forgotten by everyone around him, even his mom.
With this, the Duffer Brothers suggested that they would just do some "George Lucas-ing" on the scene in Season 2 to change the birthday of Will and that way, it wouldn't be forgotten.
However, on the official Twitter account of the Stranger Things writers, they posted a public service announcement that goes like this, "PSA: no scenes from previous seasons have ever been cut or re-edited. And they never will be." They even coupled the post with Dustin swearing on his mother.
Rumors circulated that Stranger Things was "George Lucas-ed" in a scene in the early seasons of the show where Jonathan spied on Nancy which was allegedly cut. It was already debunked and the writers of the show even swore to it that it wasn't edited.
Fans are already excited for what Season 5 will have in store given the cliffhanger finale of the fourth run of the series. It is expected to circle around Will since it all started with him in the first season.
Stranger Things currently has four seasons and all of it are available to stream online via Netflix.