We have been seeing the same issue with multiple users. Seems to happen with Chrome and File Explorer windows, maybe with other applications as well. The hardware is all over the place, with one user using an HP Z4 workstation (Xeon, Nvidia Quadro GPU,
four monitors) and another user using an HP ProBook 450 (Core i7, Intel integrated GPU, integrated display + one external monitor). Both are using Windows 10 1803. With the ProBook I have spent the last few weeks jumping through hoops with HP support, reinstalling
the OS, updating drivers, upgrading the UEFI firmware, changing BIOS settings etc. but none of it has made any difference. The only thing that seems to be consistent is that each user experiencing this issue is using a variety of monitor sizes and resolutions.