I did a run synced on bluemage and unsynced on ninja in that dungeon.
There is the mechanic where the boss starts to apply the "Curse of the Mummy" via a tether that stacks the debuff to 4 stacks. Until you turn to a mummy yourself. The mechanic is intended to be stunned. I did stun it, but boss just continues to apply it afterwards (or even while stunned two times as you can see in the battlelog on the left). Is there more to it or is it a bug?
I eventually stunned it and it stopped, but it seems 50:50.
Battlelog of the failed attempts.
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