Plastic parts dissolve

Hello together, after a long board abstinence again a mail from me. My elk is now a little more (2 months above) than 2 years old. On the whole I was spared from Macken and Woechen. Now I had to find out, after a thorough cleaning of the interior, which dissolves at various parts of the door panel and the middle armrest the plastic. And exactly where you lay off your arms while driving. The surface becomes quite soft and then adheres to one. The warmer the more sticky. Has this been noticed by one of you already and therefore you have already done something with your friend. How does the work deal with complaints? In all the decades with Volvo I have not experienced such a thing, except my 960s, since the door panels waved. At that time Volvo had used the wrong glue and had to exchange with various cars, with us it was 2, all door panels against new ones.