So, I just unlocked the Dark Mutagen Battery. I got two notifiers for it, and then I noticed that my ship actually does have two installed. I have no idea how that happened, but I'm sure it's not supposed to. Rather bizarre, so it should be fixed.

stems from the same old bug we see a million other places in the game....

you'll have to send dan a msg using the Contact This App link below the game so he knows what account to fix