known mistake? even in the demo version you have to provide such details, there was no mention of it in the entire description, you mention it only in this comment, I had to figure it out myself at the very beginning when I was playing the game, I encountered many errors in the games but never one like this specific.
I don't know which Blue ghost is (horns I guess, they are named only in gallery), but you shouldn't remove this ghoul in first because all the ghouls will go outside the map in the Windows version.
and from what I see on the screenshots on the website, there is one photo of a ghoul which clearly shows an ghoul girlfriend.
a small detail that caught my attention was calling the main protagonists sometimes ghouls and sometimes ghosts (a ghoul and a ghost are two different things that the only thing they have in common is a cemetery).
so I predicts all of these bugs will be fixed in the official released version, at least I hope so.