I was trying to make a focus tree for Brazil, only to find when I tested to make sure everything I made so far worked in the game. The prerequisite lines and mutually exclusive lines were gone! It wasn't just that they didn't render, but they straight up didn't function at all. I checked to see if I made a mistake somewhere but everything seems fine. So unless I overlooked something, it appears that we have a bug on our hands.
EpicSmasher1