I'm currently playing as the Krynn, trying to win a tech victory. When I clicked on the Beyond Mortality tech to try to research it, the Efficient Manufacturing tech was selected instead. After I'd researched that, I tried to select Beyond Mortality again, and this time it selected Sustainable Manufacturing.
I am also unable to select Precursor Understanding.
If the prerequisite techs have been researched, and there is some other reason that one of these techs cannot be researched, the game should tell you that, not just select some other tech for you without telling you.
