Hi, sometimes when the Iconian drones on my planets are attacked the 3d/map graphic of the planet will disappear after the battle. I have only done quick battles for these though so I'm not sure if it would occur after I played out a full battle, and I am not sure if it occurs only when Iconian drones are fighting or not. Also, I can still interact with and enter the manage planet screen by clicking on the invisible planet. It has been occurring since about turn 75-80 I believe, and it is on a small map with only the AI and I (there used to be another AI that I set to start allied with the other AI, and there are still some starbases left over from him). Also, I have the graphics settings set to full except for antialiasing which is set to x2, and I have vsync and fullscreen off. If I save and load that save the planet's graphic will reappear (but it might still disappear again after another battle).
My PC's possibly relevant specs are the following:
Windows 10 Home
EVGA Geforce GTX 670 FTW
Corsair 8GB 1600MHz Ram
Asrock Z77 Extreme 4