We do not validate our monitors in a dark room. We validate our monitors in rooms with a minimum of 150 lux which is standard office lighting. Was this purchased directly from Dell? If yes, New or Outlet Refurbished? What is the 20 digit alpha-numeric serial number?
That is borderline. It may be in manufacturing specifications. Get it replaced. Keep the original there until the replacement comes in and compare them side by side. If they have similar appearance, then it was in specifications. If not, return the original and keep the replacement.
Funny, I followed that the other day as I have the same monitor with the same problem, and tech support transferred me to Sales, Sales transferred me to Customer Service (aren't they the same?), and then customer service transferred me to Tech Support, and Tech support transferred me to an automated system that hung up on me. I'm now 3 days into this monitor (my first purchase with you), and I've yet to actually find a way to reach anyone about it as your chat support just tells me to call in.
I have the same problem and have yet to reach anyone, exact same. It has nothing to do with quality control, it has to do with the standards set out by the manufacturer. If it meets some bogus minimalist standard (put in place as to waste as few materials as possible) it passes and they make their $700 off of you hoping you'll just live with it or not notice. Seriously, look at that photo and tell me that's not defective.
So I returned my U2715H due to some pretty horrific backlight bleeding (pic below)...
I received my replacement monitor, hooked it up, and this is what I get...
Unfortunately my experience with this monitor is that it suffers from some pretty terrible backlight bleeding. Either that or I just unluckily received two monitors with poor quality control.