I am trying to invade an undefended Iconian planet. It spawns free drones to fight when it is attacked due to the Iconian "paranoid" ability. Attacking the planet with a fleet of warships and a transport I am easily able to defeat the drones. The problem is, I am not then presented with the screen to invade the planet with troops from the transport. I try attacking again the same turn but the drones have respawned and the same thing happens. Sending in the transport by itself results in a popup saying to attack with a fleet because the planet is defended. I am playing the 1.7 opt in patch.
It seems impossible to invade the planet at present. Has anyone else encountered this or know a solution?