I was farming primals in nagrand and smv when i came by this one,
well when you see someone else farming (alli if your horde like me, horde if your alli) wait till what their target is between 1-5% and go in for the kill on the person. (this is just a safety incase because) you need to kill them before they loot/while they're looting, you mess up their entire looting system and they can't get their loot anymore. (might be like why the hell would you mess someone else up) but i ended up getting his loot fmo then on even though the name plate appeared grey to me since he struck it first...
-if this hapens to you you need to relog a few times before it gets to normal
try it and tell me if it works for anyone else