I noticed in a recent battle that my decoy missiles were often stopping when only a few of them had been shot down by enemy point defense turrets. After watching them more closely for a while, I think I have figured out what is going on: Like regular missiles, there is one decoy warhead that is considered “real”, along with others that are the “decoys”. f the “real” decoy is hit the “decoy” decoys self destruct. This seems exceedingly silly, since the whole point of a decoy missile is that all of the warheads are decoys.
I suppose there can be an additional discussion on the behavior of regular missiles and decoys, since for some missile designs it might not be obvious when the real warhead was knocked out. Should the rest of the decoys continue their flight rather than self destructing? Some real warheads might look obviously different when they get knocked out by point defense, but I would think that better decoys would duplicate the real warhead’s secondary explosion characteristics to a certain extent so that the defense systems wouldn’t be able to tell they’d succeeded. From the description of the Point Defense Scanner module I assume there is some chance for a defense turret to see through the decoys and know which is the real warhead, but because there’s nothing visible to this, I don’t really know how it works (I’ve never used those of modules myself). Perhaps a ship with one could tell when it’s destroyed the right warhead and ignore the rest, while non-scanner equipped ships would target them all?