Paint problem on 2003 Jetta
 

I've got a 2003 Jetta with paint flaking off the passenger side quarter panel. There's no other damage that would have caused this, it's just flaking off. Has anyone else seen similar problems? My body shop guy said it should be an easy fix, but I want to make sure this isn't a known issue that's going to cause the rest of the paint to start flaking off when he tapes masking to it. Thanks!