WORKED FOR ME!
So I have an LG 65uh6150 that seemed to have no issues (minor irregularities on a pure black screen, but nothing to worry about with any kind of picture on the screen)
I recently moved and upon setting up and turning the TV back on, there was serious light bleed on the left and right side at the bottom where the stand feet attach.
Anyways, I started freaking out but then found this post. After about 30 seconds of gentle massaging with a fine cloth the issue is completely gone.