the same bug as in FH3, from time to time, I have drivatar duplicates at starting grid, during seasonal championchip. problem is, all points these drivatars get, are added just to one of them, and 0 goes to second one. so it is not possible to win championchip.
apparently it happens when you change your drivatar difficulty , either just before starting a championship or during
it doesn’t always happen so it is definitely possible to win a championship
once you notice there’s a duplicate ( like after the 1st race is complete) , try restarting the championship