Alright, I don't want to become the guy who always thinks something is wrong, but hey, I'll go until I'm told to stop!
With the some of the lastest patches, the logic for the pathing has been changed so the ships don't all funnel into one pixel worth of space and then slowly find their spot outward in a circular pattern right?
Well it seems that if you just right click on an enemy ship the movement reverts to what it used to be. So when you right click an enemy ship to attack, all you ships go to the one pixel of space where the enemy is then fan out once they get there, kind of like how it was on 1.09.
Not sure if this is really a bug at all, but I guess I can try to help any little bit.