We have an app, that hosts a WebView which navigates to a website with forms/text fields. The app works on assigned access mode. The app works fine for couple of hours, but after a while it starts to blink and show white box
You can have a look at the video here: https://1drv.ms/v/s!Ah2skpnDWn03iplWcWGUoFAUIb2W6g
The same issue happens on 3 different New Surface Pro machines.