I noticed same 2 days ago in the morning travelling to the
dealer. Just before reaching the
dealer they stopped doing this. 2 days after and they haven't done it. I think this is as somebody said due to condensation. I mentioned it to the
dealer, they werent' aware of such issue.
Dealer asked me if I changed to leds, I said - they are leds by default

Noticed that when the auto start/stop is activated waiting on red light, they are off, though there is electricity because when I push the button they glow up, releasing the pedal and as the engine starts they started flashing again