Iphone 11 pro display issue

[Daveks1604]

I've got really weird issue with my phone , most of the time image on display is ok but when i open certain apps image start flickering with pink squares apearing in random places . Its happening on camera , maps , app store , you tube , photos but not on other apps . I've try flashing , resetting , etc nothing help . But one day i discover that when i was conected to 3utools and i toggle option "invert colors" in accesibility menu then flicker totally dissapear in all apps . Does anybody have seen problem like that ? I'm really curious what is the reason behind this behaviour . I used to think that's hardware problem with dart display driver or display itself i exclude gpu cause in graphics demanding games it didn't appear . But now it's look like software . I attach some video and sorry for bad quality

 

[Daveks1604]

This is how it looks from close view