iPhone 6 front-facing camera shifted

Has anyone else noticed their front-facing camera has shifted? This is my 3rd iPhone since launch and each iPhone has had the front-facing camera shifted. It also seems to only happen to the Space Grey iPhones. I have asked co-workers, friends, and family and those that own the white or gold iPhone don't have this issue. Any one else have this issue?? I am going today, again, to get a replacement, but I feel Apple should be doing more to fix this problem.