Rear Fog Lights

So , just found another oddity with my new DS4

The car has Matrix led headlights, I leave the light settings in auto, yet to have the rear fog lights come on you have to come out of auto, and switch the head lights to manual ?

Surely the whole point of the Matrix LED lighting is for safety, so why go backwards and need to use manual mode to have the rear fog lights come on ?

Am I missing something ?

Wouldn’t it be great to have some input from an official DS customer care/technical person. !!