Awesome test and great site!
Attached is a picture showing burn-in on my OLED 65" B6 Series LG that I just noticed this weekend. I purchased it from PC Richard and Son in Nov/2016 (not even a year) with an extended service warranty.
Tried the Clear Panel Noise to no avail, and have Screen Shift enabled as well.
We use this TV simply for watching movies and shows, nothing "abnormal". Tough to see from the image because of the words, but the entire center area seems to "burned" as well. Going to call PC Richard tomorrow and see what happens.
This seems to be a failure of the OLED pixel - or a degradation where the OLED is defective and can no longer produce the proper color and/or intensity required for a uniform picture/color. The distinction should be made clear and this should not happen on a product that has been used for less than a year, let alone 3 or 4 under normal use. Manufacturers put the blame on consumers and label it as abuse, which is preposterous. This is an outright product defect/flaw. We should not have to spend thousands of dollars on and then have to babysit electronic products to the point where one can literally not use or enjoy them. In my case the set has been used for nothing more than casual television viewing, and as you can see, it has failed.