This is most commonly seen in Border Battles where undocking from an NPC trident makes the trident fire at you. Usually seen with the swarm launchers.

They don't fire at you on purpose. It's usually a timing thing where yo undock as its firing its swarm turret, but for some reason the shape of the Trident puts you in front of the missiles when they're launched so they lock on. Sometimes it's only part of the swarm. I've had just one missile on me and the rest went after an enemy NPC.

Still needs to be fixed though :(

Yes, but even so, that's quite annoying.