Hey, I have a refurbished 2012 15' rMBP, it is only around 6 months old. Recently I have noticed these strange patches appear in two corners of the screen. The photo is bad but it looks like an area of the bezel where the black part has come off, leaving a shiny grey area. I haven't seen anything chip off and the laptop lives a fairly sheltered life so I have no idea how this could happen. Has this happened to anyone else? Cheers.