Do you mean that you every single one of your areas of research reset to "1" every season, or do you mean that you don't get the extra "X" amount of dp that everyone gets after every race?
If it is the latter, this is the same for everyone.
What I mean is that after completion of the last race of the season, I get no design points even though there is an exclamation mark in the upgrade button, and no chance to research the car.