7. Twilight Zone: The Movie (1983)
To say Twilight Zone: The Movie had a troubled production process is putting things lightly. The film assembled four directorial behemoths, bringing together Spielberg, John Landis, Joe Dante and George Miller for the anthology picture, none of which pulled their director's credit from the film.
In fact, the only person to do so was second assistant director Andy House. House is kind of a "always the bridesmaid, never the bride" sort of director, more recently producing or writing television instead of helping to direct blockbuster movies.
So why would an assistant director ask to have their credit removed from a film? Well, House personally took umbrage with a notorious on-set disaster that occurred during the film's shooting. During the filming of a helicopter stunt, the pilot of the helicopter lost control when pyrotechnics were ignited too close to the vehicle.
The resulting crash ending up killing two child actors, who were being paid illegally in a bid to circumvent California's child labour laws, as well as one of the film's lead actors, Vic Morrow. House, sickened by the studio's role in their deaths, chose to remove his directorial credit from the film before the film's release.