Yes, well it seems I have encountered the most annoying bug ever. If it has been reported already I apologize, for then I am wasting everyone time, and forum space. But here it is.
The AI seem to have a tendency now to NOT use Phase Space, instead using normal space to travel to any system they want. Let me stress this ANY SYSTEM. So I had one of my plaents attacked, and I managed to defeat half the invading fleet, so the rest of the AIs fleet started runing away. They didnt do it through Phase Space though, instead they decided it would be fun to just keep going and going, and well they did. Worse yet they were still technically in that planet, so my garrison there proceeded happily to chaise them in normal space. Multiple times I had to call my units back to make sure they didnt wonder through the solar system forever.
It gest better.
About half way down the phase lane to another planet, the AI decided that it was taking to long, and started going on a diagonal path, to another planet that wasnt even linked to mine by phase lanes.
So now they had complete freedom of travel to any planet they wanted to travel too, and also immunity from PSIDAR. The only thing was that it took an average 10 - 20 mins longer to get anywhere.
I dont know if it is a bug, or if you devs are just trying to mess with us for asking (repeatedly) for there to be not set points in space.