iPad Mini 6 mark on screen

My iPad Mini 6 has recently started showing a mark on the screen up in the top left corner near the volume buttons. At first I thought it was a dead pixel but upon further inspection it turns white when viewing from the side, so it probably isn't.

My best guess would be a physical hole in the display that the backlight is shining through, but I really am not sure. If anyone could identify the problem that would be great. I have included an image of the side and front views.

Side:

Top: