I have had it happen to me too, but I'm not so sure it's a display driver/edge problem. I had this happen to me when using just Skype For Business.
My hunch is that it's more mechanical than software, though, cause I had similar happen on my Surface Pro 1 with the keyboard covers. It would randomly think it was disconnected and switch between the modes. This would also explain why sometimes for people the trackpad or keyboard goes out, but the keyboard backlight and the battery are still on. It's not a complete disconnect, but rather, a temporary malfunction of the connections. When it starts to do this on me, I just undock and redock.