Played about 41 hours until some humans invaded one of my undefended planets. The invader turn never ends. The planet does not change allegiance. I cannot save or even load, barely exit the game (to desktop only), and can navigate menus. it was the first time I was ever involved in an invasion. This is extremely frustrating. I'd like to finish this game. I don't dare to start a new one by fear I would get this bug again, although I can't find anyone having complaining of such a bug in years.