That's the thing though, those were mistakes that someone made back then and millions of people saw the film with those mistakes. And again, garbage mattes always seem to come up in these kinds of discussions and I always have to repeat that I only try to remove them because in optimal projection conditions, those wouldn't have been visible, and if I knew they were always visible, I'd probably be putting garbage mattes back where they were removed in the SE, just like matte lines or colourless lightsabres.