Originally Posted by PotsyDriver

I had an unexpected fix with this problem. I ordered some inexpensive adhesive vinyl that I was going to cover the effected area in. I took off the door handle, and decided to paint the 'melting' area in some glue before covering it, with the hope that I could 'seal' the melting-ness. I used some of this WELDBOND glue that I had sitting around.

I painted the glue on and spread it out evenly with a small paint brush - I'm not sure if it has any special qualities beyond PVA glue. Within an hour it had dried clear and smooth. I decided to give it another coat, and just reinstalled the handle as-is without trying to cover it. Problem fixed. No longer melting & nice and smooth to the touch.