Help i can't loot!

Hi! I'm in the Barrens currently on a rogue quest up north. I try to loot questnpc's and such and there is a lootable corpse but the bag icon which usually is brown displaying that the corpse it lootable is now greyed out even though i know there are items to be looted. I tried killing normal roaming mobs around the areas, Raptors, Striders Etc. But everything does the same, it all displays a bag icon and has a shimmer but the icon is greyed out!? What do i do? :O

Try relogging and see if it fixes it. My guess is the NPCs displaced upon death or something. Such a thing occured once already not too long ago but it was when they were alive not dead. Wait for them to respawn would be my second tip, they should work then.