I have gone through the whole reset, backup - restore - recover, discharge - charge dance, which its ridiculous in the first place for a brand new phone. There is a simple reason why some people see the bug and some don't: no two configurations are equal, and there is a combination of factors that makes the BUG appear. In my case, when the zoomed option is active in the brighness screen the BUG appears and disappears at random. If the zoomed is off, the BUG goes away. But lets be crystal clear, since my 64Gb iPhone 6 is not hacked in any way, all settings are within normal parameters, all apps are well known and Apple-approved, the simple fact that I cannot use the zoomed option makes it a BUG. It may be a very specific BUG, that requires a "magical" combination of perfectly ordinary settings, but it is quite clearly a BUG that needs to be addressed, since many people have the same "magical" combination.
Now, there seems to be a semantic issue regarding the bug word, perhaps in a misguided attempt to protect Apples reputation, clearly from people that do not develop software and have no experience with software bugs. Some bugs are hard to reproduce, and most bugs DO NOT affect everybody, if they did, they would probably have been caught in testing phase inside Apple. It does not make the bug less valid, or immaginary, or hardware related. In my opinion, and yes, I am a developer and have dealt with bugs all my life, its a simple software issue. That is why this thread, and so many others started, not to defend Apple or to pretend that the users are to blame for their problems, since they have not restore-restarted-reseted or whatever.