Hi, I have a 2015 rMBP with what appears to be a light bleed (if it is called such) around the edges. Is this normal? I have had a few MacBooks, never a retina, and never noticed this. I do have case on the rMBP. I as of tonight just noticed this upon start up. I have been hearing random popping on the monitor for the last few months. I posted on that once, but so far there are no rhyme or reason. Any suggestions are helpful.