Hi,
After beating the Fampyr Lord 2 times I'm still unable to loot his and his minions body to proceed further.
Here are all my saves (which includes before and after the battle, see the latest ones) -> LINK
DxDiag LINK
Outputlog LINK
This is repeatable - just load the save after the battle and you'll see that the loot is impossible to interact.
Here is video on youtube