I was practicing at essington 1.03 with FR3.5 and invulnerability ON . I used the ghost car option, with "best" enabled. It happened that I scored the best lap, and immediately after the finish line I (apparently) have crashed the car ( I don't remember , maybe I had some collision). The next try, I was following the ghost, that suddenly after the finish live crash in the wall, and lose the front wing. At this point I struck the ghostly wing and it was solid, so I flew out almost out of the track. In my understanding the ghost car should not lose the wing because it should be invulnerable as I am, and more than this, it's debris should be uncollidable too.