Hello alexi
i have the digital mirrors and have had them for two years now,and a great fan of them , but I always sa they like marmite love or hate……
Yes with temperature changes especially in damp weather the lens internally do mist up and give the displays as you showed. It’s a pain but if you run the heaters for long enough they will clear. The heaters do turn off automatically so repeat the process,
the wing mirrors are prone to this especially if the use power washer on your car.
in winter I put a glove on the wing mirrors ! Stops them freezing.
also check the seal between the top and bottom halves of the wing mirror assembly is water getting in there?
please is the problem on both wing mirrors?