Hello there!
The present is a design choice and not a bug. As you can see, at the bottom of the Tooltip, your "Maximum Vassal Limit" is 19. Because of that, your "Vassal Limit" is lowered to its maximal value '19'. If you have any questions about it, don't hesitate to ask about it on the main forum for the game.
The present is a design choice and not a bug. As you can see, at the bottom of the Tooltip, your "Maximum Vassal Limit" is 19. Because of that, your "Vassal Limit" is lowered to its maximal value '19'. If you have any questions about it, don't hesitate to ask about it on the main forum for the game.