[NOTED] MY LOWEST CHART DOESN'T HAVE THE XP BONUS

I have 4 characters in the game, and the lowest one is a sacro, the other ones have the bonus except that specific char, i don't know why, i want to play with him but he gets the poorest experience even with a good set, i even compare him with a 5th one and it's amusingly different the amount of experience he gets, i don't want to delete him and create another one cause he has also missions and works. Please help me to repair that bug.