Shielded?

Has anyone else noticed this today?

When you kill the mob then they go shielded. I have never seen this before.

first time i see it....

Maybe this was suppose to be some kind of protection from unintentional walking into the turret during killing or from stealing the kill by other players.

That's an obvious bug but this one is interesting.

My bet is that this is a residual (buggy) behaviour that was introduced for the mayhem bosses (they go SHIELDED too).

I have seen that a lot. It happens the moment after you kill something before it becomes lootable. I suspect it's just there as some part of loot 2.0 and overkilling. Like a programmed stopping point so the system calculates and assigns exactly how much was spent killing something.

Maybe it also has to do with their high regen and preventing them from gaining hp at the time of them being killed?