I came to the idea that one of the front strut was shut because the front bouncing a bit more than rear (when rolling) and managed badly some rought bumps. I remembered however a story said by a guy just passing beside me when working on the car telling me his father had one and had to replace 3 times a strut thinking they were wrong to finally understand that it was the height sensor that was shot... Long story short, when they are going wrong, these sensors goes "blind" and send no more signal to the SARC module and then, the strut stay always in soft mode. That gives truly the impression the strut is shot. And if you didn't replace it, it will probably makes more wear on the strut. Sadly, I dissasembled the failing one but no defect was seen. The problem is probably in the upper part (left).