Speaking of FBC, my mom encountered this problem on her LR. She went to get a chip in here windshield fixed, and was told that because it's a heated windshield, they can't do anything for her. She has to wait until the windshield eventually cracks (if ever) and needs to be replaced, and then it can be done (MPI covers a full windshield replacement).
Technically, I don't think this is specifically an FBC problem, but rather, any luxury vehicle that has a heated windshield.