I'm playing the game under DX 11 as Vulcan seems to be borked since the patch (that's another story). I am seeing bodies of dead mobs ever so slowly creep or slide away from where they fell. They will sometimes slide into the terrain or float in the air over time depending on where they were and the prevailing terrain in that spot. If I click on the body (assuming I can see it) to loot it, my character will go to where the mob died and open their loot. I can also mouse around the blood pool their death created and usually find the spot their body should be and loot their ghost as it were. But it is rather odd/disconcerting to see dead bodies move away like that. I know I am fearsome but mobs running away after death is unusual.