So I've found another bug with Heliostat, with the radiation points. Earlier I entered the mission with matchmaking, but ended up solo initially. I killed all the enemies at the front and only activated one of the radiation protect points. When I was halfway through, I saw someone else spawn back at the start, but when I got to the sealed room, there was no minotaur and the barrier was missing. When they got to the room, I decided to double back to the second radiation point, whereby a third person joined our team. I saw the "objective updated" appear midway, so myself and person #3 went to the sealed room and the minotaur was there, so we can take down the barrier - but person #2 was still in that room killing adds, and the arc point didn't activate to shoot. I have seen this a couple of times tonight - players get to the sealed room, but unless they've used both radiation points first, nothing spawns properly so you can't progress. It doesn't matter how fast or slow you travel through the radiation zone... Additionally, I purchased the "Paraversal Singularity" transmat, but it's not in my inventory and not unlocked in Collections. So Eververse just took my Bright Dust without rewarding it.