I think we can safely assume that this enemy bug is caused by other players killing an enemy. I walked into the armadillo area and there was one of those stalk things that I could not kill. One did spawn in its place however, that I could kill.
Some mobs cant die
Re: Some mobs cant die
Hmm, what do you mean by one of those stalk things? Do you mean one of the enemies that pops out of the ground and spits a mud ball at you? If so, you mean two of those enemies were overlapping each other, one which you couldn't kill?
Re: Some mobs cant die
Yep, that would be correct. One of them I could kill, and the other I could kill.
Edit* Encountered it again with a petunia, and it despawned when I left the area, while someone else was in the area.
Re: Some mobs cant die
Ok thanks for the info. I'm going to try and get the item bug fixed first, then I will address this. That way, incase they are related, then I will hopefully know the answer in order to fix this.