Here's my setup: macOS 10.11.6 Parallels 13.1.1 running Windows 10 Dual monitors, arranged vertically Windows "all displays in full-screen" mode (distinct "Space" for Parallels and macOS) The issue: Frequently, I'll try to click something in my Mac space and nothing will happen. Then I notice the menu bar says Windows. If I drag the window out of the way, I notice it's just a full-screen frame with a transparent fill. To click something on the Mac in this mode, I need to select the Mac program from the dock. How can I prevent Windows from placing this invisible shield over my Mac desktop? Side note: Parallels often creates an empty black desktop space as well.