Custom Collections incorrectly listed as '2-Players'

[LateNightGhost]

I have two custom collections. Until around 6-12 months ago, they used to appear correctly in my main menu. The text would appear for the collection as, for example 'Now Playing'. Since a recent update to either Retrobat or Artflix, though, all of my custom collections are listed as '2 Players'. Would love advice on how to fix this!