Kundun Relics Bug ??

[Doods 5]

Dear Admin,

Today, we went to Kalima 7 to kill kundun relics for a quest. i was just wondering since nobody was there and we we're  packed of party and it was all my guild mates.

Usual for this kind of quest, last hit must take the quest go through, so my mates doesnt attack and i'm the only one who was there fighting and hitting the Kundun relics.

after it died, my quest does not count. so is this a bug or ?

P.s i only have screen shots but you can check this timing between 21:10 to 21:20 sv time.

screen shot below;