In my current game, I have some squadrons of Drengin ships that seem to be able to see me, even beyond their 2 tiles of sensor vision. I can't seem to employ one of my favorite strategies, and that is to always have stronger sensors than my enemies, and slightly faster ships too, so that I can lead them into a trap.
But it's not working in this game. Whenever I turn, he turns. Whenever I speed up, he speeds up. Even if I'm outside of his 2 tiles of vision. And is happening with his buddies in another part of the galaxy too.
What's up with that? Are there any reasons they'd be able to see my mind's eye?
"That one, it's as if he's the devil himself!" (see what I did there?)
Additional info: He's trading with the Thalans and at War with me. Outside of that, he has no other relationships with any of the civs that I've met so far; so I don't think he could be sharing fog-of-war vision with anybody who would know my territories.