NPC Spawn Issue: ZONE : NAJENA, no corpse found

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Time: I time stamped the screenshot... BUT there is no screenshots (a different issue.)
EST 7 PM to 8:30 PM, Tues Jan 17, 2017. ON account: Myrkul - char = Vaniti

ISSUE: After killing darkbones just past the invis door. When trying to loot a red message no copse found... Happened several times though the day. I found it very strange that I killed these 2 darkbones repeating threwout 2 entire LVLs and dropped no - focus or epic pages.