So I just finished a a game and thought I'd write up some of the bugs I encountered.
1) AI fleets traveling at sublight from planet to planet:
Twice that I saw in this last game, the AI ran from a planet by way of its sublight engines instead of its Phase drive. The AI's ships followed the phaseline to the planet that it was going to and eventually went to phasejump after I left the ships alone and lost sight of them. When I lost sight of the enemies ships they were about 1/2 way between the two planets using sublight engines only.
2) The AI still runs from a fight even at its homeworld/last world:
Speaks for itself
3) Pirate fleets occasionally sit at a grav well's edge.
At one point in my game, I thought I was going to lose half my cap ships which I had withdrawn to one of my planets to repair. I thought this because when I looked at the empire window it showed a full pirate raid in the system which I had somehow missed seeing. When I went to check on my ships I found the pirate raid chilling at the edge of the grav well doing nothing. I was able to destroy about half of them without losing anything except for a few bombers. I think that the pirates were stuck waiting for a formation to phasejump.
4) Computer announces "Scouting party under attack" when trade ships are attacked at an unowned planet. Computer announces "Fleet under attack" or "ship under attack" for a scout ship that is under attack.
Again, speaks for itself.
5) I also thought that I saw that the Devs said that the game would now notify us when our capships lost shields/had low hull. I don't think this is happening or if it is it isn't noticeable enough since I lost my flagship and I didn't even know that it was under heavy attack.
Anyways, thats everything I saw in my most recent game, If you made it this far, thanks for reading this long post.