Webb, also:- In the OG films, the actors used retroreflective rods. Not CGI post-effects, a lot of the time they had a physical thing in their hand... That can't be 'accidentally' in the wrong place.
"In New Girl, there's a scene where a minor character is speaking, then the camera cuts to Jess listening...except that same minor character is in the background."
Webb, also:- In the OG films, the actors used retroreflective rods. Not CGI post-effects, a lot of the time they had a physical thing in their hand... That can't be 'accidentally' in the wrong place.