I am mostly referring to show or movie creators answering questions in ways that might effect the lore. They don’t have to be plot holes, super significant, or still held to be canon.

For example maybe it was a small detail they elaborated on or they answered a long running question.

I was originally going to give the example of why characters in Star Wars don’t toggle their light sabers on and off during combat but it seems like the explanation I was more of a fan theory from what I can tell.

The question can also apply to video games if you have an answer with one of them.