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.