Had this as well, also in France, and like you don't have the avoid u-turns on
I've also noticed on the PC that "avoiding u-turns" can mess with the routing on some of the mountain passes

The one I found it one was the Grossglockner heading north and diverting off to the Franz Joseph parking area (IIRC). Avoiding a u-turn it wanted to take me back south, and not north and continue up the pass