The quest appeared. I completed it. But it never appeared as complete, just disappeared.
I never received 300 blue essence, nor did it count towards completing the rolling watch and earn goal.
Main issue being the timer for that quests keeps ticking down. It's under a day now.
But here is no way to complete it. As the quest is gone.
This is my second account, and I have completed icon set on my first, so I do know how it works.
Is this something I should write a ticket for?