(BUG/GLITCH) Pixels from top of the screen shown in Navigation Bar

[hallodrix]

I am currently using XPerience-11.1.2-20171004 with OpenGapps and Magisk installed.
After a while the symbols/colours which are shown in the statusbar, can be seen in the navigationbar.
This started a while ago (round about 1 month) and happens on every Rom for me.
Examples are attached under the post. If somebody has the same problem or has a solution i would be very grateful!

 

[krishna8691]

try caliberating your display there are a plenty of apps for that
or your display might have been damaged
or you can also try removing the display and again putting back this can fix the problem

 

[hallodrix]

I just calibrated my display with an app. But the pixel glitch still happens. How can this be a hardware issue?

 

[krishna8691]

I just calibrated my display with an app. But the pixel glitch still happens. How can this be a hardware issue?

check if the glitch exists while in recovery mode
i am also a newbie