Possible Bug: Being able to have more than one scientific leader at a time. First lazy test game as Mayans produced about 5-6 scientific leaders, with two leaders appearing when I had old leaders kicking their heels waiting for wonder techs.
Edit: Steps to reproduce (reread beginning of thread)
Random Map game. Keep your old scientific leader around, and stay in the tech lead- another leader should pop up soon enough. (This will be easier with a scientific civilization, but happened with Maya.)
Edit: Steps to reproduce (reread beginning of thread)

Random Map game. Keep your old scientific leader around, and stay in the tech lead- another leader should pop up soon enough. (This will be easier with a scientific civilization, but happened with Maya.)