During the final battle with the Legendary Archdiviner, people can stack on top of the boss and have one person take the hammer to charge and hit the seal. After the seal is hit, the four people stacked on the boss somehow bugs him so he remains in the dazed state. This then allows people to continually grab, charge and hit the seal until victory.
Apparently the way you stack is important to this bug. The four who stack have to be literally inside of the boss. If people stack close and next to the boss, it doesn’t create the dazed bug, but it will keep the boss stationary and in a non-attack mode when he does come out of the daze.
So it’s sort of two bugs in one.
Screenshot is example for the “literally inside of the boss” stack.
