Seems to be a random occurrence where I would come across a monster (which I haven't touched or seen) that simply has no hp.
Also I didn't find any traps near where he likely spawned, I'm stumped as to why and think this is some kind of bug.
Furthermore when I kill the guy using any damage source, I am awarded the experience as if from a normal monster,went from 8% to 9%.
This isn't just restricted to this specific zone either, as far as I know it can happen anywhere, but not on bosses/elites.
