I don’t think this issue is directly related to the Edition tag. This problem is discussed in this thread as well. All my movies have an Edition tag, but some movies in certain libraries are displayed as sources on the credit page, while others are not. This issue should not be related to the presence of the Edition tag.
For the movies that do not appear on the credit page, even if I delete the Edition tag, they still do not show up on the credit page. This is my situation.
