We are still seeing the issue here. We've been through a few more steps to remedy this with our affected user.
Originally the 2 displays were connected to different sources - one to th on-board graphics and one to the built in graphics.
- Connected both displays to onboard graphics, problem persists.
- Connected both displays to discrete (add-on) graphics, problem persists.
- We've installed all applicable windows updates, problem persists.
By saying "problem persists" - I mean that the computer will operate normally, and then the display will glitch leading to a white box, and a area of the screen where the user can "click-through" the top window and be unexpectedly modifying the windows/desktop
below. In earlier posts I've already described how we moved the user to a new computer, and started un-installing various software titles to narrow down the issue. I think I'm close to systematically ruling out that this is anything but a Windows 10 bug, which
is exactly what others have said in this thread.
This sounds exactly the same issue as what we have and you have tried the same as what we have tried.