Cannot select secondary class as Emperor

Once you achieve Emperor rank and head into /classes then try to pick a class to set as your secondary, it still doesn't let you, saying that you need to be at least rank Emperor to select it even though you are clearly now Emperor rank. Clicking the button does nothing, not even open the confirmation prompt. CELESTIAL users are not affected by this, likely because the rank-detection logic is still checking to see if the player's rank is CELESTIAL rather than Emperor or higher, which explains why it doesn't switch to "Click to select this class as your secondary class." when you become Emperor.