This bug only happens when I place down a certain object. Most things run smoothly, but when I place down, say Charon, the game starts to act funny. The GUI starts to flicker and none of the keyboard keys respond (WASD, Delete, H, Enter, Space...), even hitting Escape does nothing. I can still scroll and right click, but that's the most I can do once this bug occurs. I am forced to restart the game, and it is doesn't always happen when I do this.