What you were expecting to happen, and what actually happened:
I have set up a Gnome Band defense but attacker see a Lance Knight instead of Baz Bonebeater.
How often does this happen? When did it begin happening?
Seen once today, but I know I have seen many time the defense with a Lance Knight while I was doing PvP myself.
Steps to make it happen again
Find me in PvP I guess.