What about situations like this. Are there anything to stop this??? Which is more common thing then leaving party last second.
1. CP lacks 1 player and takes random into party. Right before killing boss, they killl that random and gets full drop by themselves and that guy who was killed get nothing. And on top of that, it will count as finishing the instance. So he won't be able to go instance with other party during that day (because of instance cooldown).
2. Picking stuff with pets/vitality pets. I can't remember if pet can pickup drop in instances @ Averia servers. But in some servers pets/vitality pets can't pcikup drop since if the pets picks it, it's 100% that your pet gets the item.