Chosen Solution
I found some blur black line on top of the screen. It will show when I use my MBP 2017 for a while like this. (night mode)
(light mode)
when I turn off for 2-3 hours then turn on, It disappears. but after use around 20-30 Min. The blur black line gradually come back again. Update (12/14/2018) @tomchai I have zoom-in and captured this from my phone.
Strange as the mouse icon doesn’t fade with it, I suspect this is some weird software effect, or the mouse icon does fade, but the camera didn’t capture it so well. Or there is some complex failure modes changing the grayscale on those particular rows of pixels, so black and white looks OK, but the in-between colors scale down. Update: After turning up the video quality, it appears that there is some delayed fading and image retention on the failed area, so this is related to some flex cable or row gate IC issue, only affecting these particular rows.
@abubakarkhalid1993 another way to change display assembly for free by apple. look for AR Coating problem. there are many case in MBP2017. Claim for that reason you will get the new display even no apple care anymore. I think you can claim for that reason until late 2021 because apple spare part for 4 years.
