This occurred 2 days ago.
My friend and I got Dark Omens in our legend QP and when we dropped down to start the event, a minotaur spawned immediately and cornered us in the ravine part.
After killing the minotaur and the beastman horde, all of the banners were already up all over the area.
When knocking down the last banner, the event was over and all surviving enemies were killed.
Idk if this event got nerfed or if it just bugged out but it’s way shorter than it used to be and definitely way shorter than the seemingly new Convocation of Decay event.
I’m all for balancing end events but it was over within a few short minutes and it felt way too easy.