When I view a space battle, sometimes I will be sent to a black screen while the sounds of the battle continue to happen. The screen is unresponsive and I did not find a way to exit back to the game. When I hit ESC, I received a box with an error message about a graphic involving the shield generator, but the "Copy to Clipboard" button did not seem to work. I will post the exact message when/if I encounter this bug again.