grav-vt

Not certain why Stardock would not respond to paying customers over such a simple issue; however, I will post how I fixed this and send Stardock my support bill. The issue does seem to be Windows libraries on which WindowFX depends that are overwritten by an update or driver installation. I reinstalled WindowFX and the issue did not repeat until a recent Microsoft update after which I reinstalled WindowFX again and the proper functionality was restored and has remained so. Per

Can also confirm this behavior on Windows 8.1 Pro. The animations; all of them, stop working without warning. Dragging a window form causes it to completely render 100% transparent until mouse release when the form reappears. This started a few weeks ago which makes me wonder if either a Microsoft Update or Graphic driver is overwriting a WindowFX dependency. Stopping (Off) the "WindowFX Features" restores the functionality however restarting the WindowFX Windows Service does not.