Bugged Voeld Quest> Fact or Fiction

OK, same bug. Door's bugged. tried to load from the checkpoint - it's still bugged. I entered the "vault" through a window, but I couldn't get the quest data. The quest itself has disappeared from the journal the moment I entered the room. It's not among active quests, nor is it among the completed ones. I don't think I got the viability points, but I guess I won't know until I complete the zone. On a personal note, that was the toughest and longest fight for me yet, so it's a bit disappointing to end it like that. And replaying the whole zone will be too frustrating.

Oh, and BTW, when I loaded the game, I haven't had the quest marker, so, looking for the vault, I went back to the zone where the Boss fight happened. Doors kept closing behind me, as if I was there the first time. No enemies appeared. I was able to get out only by activating the end console again. (separate unconnected bug?)

Ah, and landing pads on fire, in the Boss' room, remember those? I don't. Couldn't see nothing, because every landing pad glitched out, and flickered with black triangles. When I went back there, the whole room flickered like crazy. (another unconnected bug?) And that was after I rebooted my PC and reloaded the game from the checkpoint. Yeah... this wasn't fun, guys. Not fun at all. Thank god the music theme was playing on the background, the only silver lining to that horrible glitch cloud.

Specs: i7-6700K, 16G RAM, GeForce 1080.