Players from Jagged Coast, Mokona(Lancer) Notify(warrior) Frake (sorc) all used a bug near end of Kaprimas death to steal all loot from boss and disband party. Have a screen shot which i will try to attach.

Your best bet to a quick and easy fix, is to get into live chat, with your screen shot, and have the GM bring up the loot records in game, and get it handled,

Rko (Jagged Coast) just did the same thing.

Have talked to GMs about this issue and have been told multiple times that they having nothing in place to prevent this right now and that theoretically someone could make all their money by ninjaing enigs on every single run and nothing whatsoever can be done to them.

If you wish to prevent such a thing from happening , when you queue for a dungeon select you'd like to be leader and that way the loot won't be changed to ninja stuff.