Hi
I have heard about an invisible ship bug, i thought it related to player ships.
However i have been noticing AI ships vanishing and then re - apearing the next turn to attack my stuff.

I thought they were just quick or somthing. but then i caught one in the act -battleship got past my defences and destroyed one of my starbases. I looked around and it wasn't there! So i thought it must have disbanded itself.

Next turn it re-appeared right where i had expected it to be... right next to the previous starbase it destroyed and then preceeded to destroy more of my starbases!