So like many vanguards right now, I've been farming "Alone in the Dark" for black kats, and haven't been having too much luck. I got a x12 vitapod while in candlestick keep, and then went down one more floor. Upon reaching the next floor, I re-entered the missions interface, and restarted the mission. I rushed for the elevator, and went down a floor.

Upon reaching the next floor, I noticed something was up with my health - it claimed I had silver health(AKA, a x12 vitapod plus healthy boost IV). Here's a picture I took real quick.

I'm not sure if the health itself was bugged, or just the display. Either way, once I picked up a mineral, the display went back to showing my correct health.