I've noticed this occasionally, but this time it's gotten a little extreme. I'm playing the "Entanglement" map with two fixed teams, TEC vs. Vasari. At one asteroid (Rezia, I'm not sure if the names are random on set maps), AI ships have been chasing each other far outside of the well, and it takes them forever to get back if they do try. They keep sending more ships, too. There's a long chain of ships, all chasing each other into oblivion.
I have a saved game if you guys want it.