He is causing drama because he has slept with several extras and members of the crew

This former A list mostly television actor got too good for his show.

So, now he is a B+ list mostly movie actor and causing trouble on a new movie.

He is causing drama because he has slept with several extras and members of the crew and it is causing a lot of tension on a set which should be running smoothly by this point, given the history of the movie.