iPhone 5s top glass not flush with chrome bezel?

So I was recently rubbing my iphone screen clean with a microfiber cloth when I noticed there was some white dust / lint on the top of the screen where the glass meets the bezel that simply won't rub off. Upon closer inspection the "white lint" I'm seeing is not lint / dust at all, it is the edge of the glass part being raised above the chrome bezel, and instead of being black or transparent it is white. When I look at the top part edge on (like looking down directly at the lock button) it appears that the front part of the screen is raised up ever so slightly. If I apply pressure on this raised part it goes down like it should and is 100% flush like in the product images on the official apple iphone site, but as soon as I release it comes back up again. It's a really minor cosmetic issue right now, but I'm concerned about down the line, like a thread getting snagged in the tiny elevated part and pulling the screen to be more separated. Or maybe over time the separation will increase on its own?

Other than that (and my loose rattling lock button, which I've learned to live with since all the ones on display at my local apple store also have rattling lock buttons) the phone is flawless. Would apple be able to re-seat the screen to fix this issue? Or if I showed them this would they just want to offer a replacement? I am definitely not pleased with this very minor defect, but not sure what to do. The fact that the screen is raised doesn't bother me, it's that it looks like white dust / lint because is stuck in there where it is raised that bothers me.

Thanks for your replies