Having same problem. I am level 45. Have done 3 world bosses since starting. On all three, was present the whole fight, did plenty of damage, provided support, and didn’t die. Even after all of this work, in all three of theses fights, I have never once received credit. It just ends, and I see everyone huddle around where I would presume a chest has spawned. This really is killing the game for me. Broken game is broken. Please fix this.