Trying to unlock rain of missiles ("destroy an enemy ship with a defense drone deployed using only missiles") but defense drones are apparently in short supply when I am hunting them. So I think, "at least the second form of the boss is guaranteed to have a defense drone." I kill it with only missiles, and ... nothing.
Does it not count because the boss "escapes?" Or did my scrambler mean that the drone wasn't effectively "deployed?"
Or is it a bug?