Invinvible Enemies & Everlasting Loot?

[Robin Yerloot]

Okay so I've come accross two anomalies lately, one has been the loot from other players drops just sitting arround everywhere, they don't dissapear and you cant take whatever is in them, the other is enemies with no health left that you can attack all you want and they won't go away or attack you, any ideas as to why this stuff is happening?