iPad Pro 10.5 screen issues (colored and flickering bars on screen)

I have a 6 months old iPad Pro which is a replacement device from the Apple Store for my broken device which had different display problem. In the last days an inch wide bar appeared on the smart port side of the screen which has flickering backlight and discolored lines. Touch is still working on that part of the screen and occasionally the problem disappears all together. I’m using my iPad every day but I have never dropped it or anything, do these screens just fail on there own?

Anyone experienced this before? At this point I’m pretty sure it’s a hardware problem, tried restarting an everything.

Could it be that the display ribbon cable got loose or it’s a faulty lcd? Does apple offer warranty for replacement device if my original purchase is over a year?

Does anyone knows if there are good quality after market lcds for iPad Pro 10.5, because I can’t pay 700$ for original replacement (that’s the cost in Hungary)

Thanks for replies in advance!