So, I don't know what little flashing light or whatever I missed on my HUD to tell me I was in danger.
I just did Nsu Grid for the third time. Failed the first two times after defeating all the ships, because there was a glitch and the last fragging door on the objective wouldn't open. This time I did the objectives first. Then I shot all the little ships, then I went for the crew ships. I boarded the last two crew ships and blew them up. The health bars on my ship were full, so I was quite happy. Mission Complete.
I then started mopping up dropped mods and things with my archwing.
Suddenly, and I use that word because I had absolutely no indication that ram sleds were launched or there was anyone else still alive except me, I get Cephalon CY saying catastrophic failure imminent. I teleport back to my ship, it's full of grinneer and I have 50 seconds to fix a hull breach. I do so.
They instantly make another hull breach, but I can't fix it because I've run out of Revulite. I didn't even know I was close to running out, I only had a couple of minor repairs earlier in the mission.
It's seriously unfun to fail a mission for a BS reason when you think you've already succeeded.
It's even more unfun to fail it for a BS reason when you've failed the previous 3 missions because of a ridiculous bugged door.