Stumbled upon this bug just now which made me lose my terrorguard named Baal. R.I.P
Was trying to get a new name for my Doomguard due to going Dserv/service and this happened:
If you choose "Abandon Doomguard" it will actually rename your Terrorguard.
If you choose "Abandon Terrorguard" it will steal your 50g and not rename any demon at all.
So sad.
Edit:
Oh happy day.