Hilarious! I worked as a movie actor for some time, and, now and then, a production is doomed this way for some reason or other. I was working as an extra in a production shooting on location in Boston. During filming, the co-star suffered a heart attack and was disabled for months. During that time, a substitute was found, but rather than reshooting all the scenes with the new actor, he was shot from behind so as not to make the change obvious to viewers. The location director was the main director's brother, and he was not up to the job. Shooting went badly, and lots of time and money was wasted over stupid decisions made ad hoc.
Of course, it was impossible to edit coherently; it closed during its premiere in New York, as all the audience had walked out before the credits.
No, I will not mention the title, but it was 1969 and the brothers who wrote the story directed the film, which previously had been published in Playboy as a short story. The elder brother has since gone on to huge success in Hollywood.