It may be hard to see, but I can't get a more focused picture with my phone. At the top where the glass meets the aluminum, there is a perfectly centered "gap" for lack of better explanation along the seam. It looks intentional, like it could be where a brightness sensor could read the ambient light. But the other 3 sides of the glass appear to be tighter to the aluminium than the top. You may need to open the pic in another tab and zoom in - I tried to put arrows where it starts and ends. It is the middle third of the top seam of the glass/aluminum. Any input is appreciated. I wanted to check with others before I set up a genius appointment with my local store. It functions as expected, but I'm afraid condensation may get in there.