Since the last Tuesday patch, we tried Deimos a few times, and we had a consistent bug, even after resetting the instance or coming back with other parties.
We have concluded that the first green teleport will fail with certainty. The green field spawns, we stand in it, the green field expires, disappears, and nothing happens. no teleport, we’re all there waiting for the next green field. This takes about 20 seconds-ish, which means the enrage timer is now effectively short that time since the teleport is guaranteed broken now.