Hi, can anyone please tell me if this is a known bug before I waste customer service's time with a support ticket? Since installing Leviathans, whenever I play a game, my research window bugs out with researched techs not vanishing from my list of choices and often leading me to a dead end where I can't research anything esle in the field because I'm left with techs I've already researched. Is this a known bug or do I need support, please?