Joss Whedon, the director of The Avengers, Serenity, etc has been accused of unprofessional behaviour on set. As we know, Whedon was brought in to steer Justice League smoothly to the dock, after Zack Snyder had to leave the project to deal with a personal tragedy. (This also happened at a time where Warner Bros/DC was still trying to find their creative footing when it came to the DCEU.) Whedon ended up re-writing and reshooting almost the entirety of the film.
That in and of itself, is of course not the issue. However, recently, Ray Fisher, who played Cyborg in the 2017 film, accused the director of unprofessional conduct on the set of Justice League.
“Joss Wheadon’s on-set treatment of the cast and crew of Justice League was gross, abusive, unprofessional, and completely unacceptable. He was enabled, in many ways, by Geoff Johns and Jon Berg. Accountability>Entertainment.”
This story was later further solidified when Kevin Smith, on his Fatman Beyond podcast said that he had heard similar things about Joss Whedon’s behaviour on set.
“Remember went I went to the Skywalker set and some people had worked on both Solo and Justice League? The special effects guy said there was a fair amount of trash-talking of Zack’s version of the movie on-set by Joss. Again, this is what a special effects guy who worked on both versions of the movie told me. But that he [Whedon] would cut down, dismiss, and be negative about Zack’s version, which he had seen and all these people had made together without him and stuff.
The guy had said he was kind of uncomfortable on-set because the people he was talking to about not liking that version of the movie were all people that had helped make that version of the movie, so that I think is probably the unprofessional thing. Like you don’t do that, especially if you came in to help out during a bad moment in the director’s life and stuff. But that’s hearsay.”
Joss Whedon hasn’t commented on these accusations, as of this writing.