Yes.
Exactly as you described. One kicked in this year half way through the Passportes ! Fortunately, was able to get to Morzine via road…
Flashes of light at the same time as a rapid eye movement set them off for me.
Passportes one caused by sudden reflection off snow coming doen to Les LInderets from the Pointe des Mossettes.
I’m finding these new bright LEDs on cars a real problem. And no drugs seem to help it once it’s going.