outpost bug?

Once an AI civ declared war on me out of the blue when it went it moved a unit into a square that had my outpost. I was playing on Regent level and I thought that on Regent the AI always warns you before declaring war. Anyway, I think maybe the AI accidently moved into the outpost and that made it declare war kind of like how if an AI accidently moves into an invisible sub it declares war.

This was using the Conquests executable but playing a bix scenario.

That may or may not be related to the sub bug. Chances are however, they just wanted to declare war on you. Outposts don't get used much so i don't think you'll get a lot of feedback on if it's a bug or not. There is no level where the AI always warns you before declaring war.

Do this - create a scenario and surround the AI with your outposts. If the AI walks onto it and declares war, then it's a bug.