I have tested Ioannis Komnenos (Ignoramus) and I believe that his Authority stat is indeed bugged. When I manually removed all of his + to Authority traits, his Authority stat suddenly jumped to 10. I cannot find any reason for this in the game files, and the only thing I can think of is that it is a leftover bug from the stripped out BBB Civil War system. From now on, unless someone can prove that the Authority stat being displayed for Ioannis Komnenos is correct and not bugged, his Authority will be calculated by adding up the + and - listed in his traits and retinue. Accordingly, Ioannis Komnenos' Authority is currently 5, and CA E3.2 passed.