MS Office 2013 bypasses the standard Windows UI elements to use it's own. Grouping several windows of any Office application, e.g. Word leaves a translucent frame around 8px wide on the desktop when the Group is minimised.
Clicking the mouse inside or outside the frame does nothing, but clicking on the frame itself causes the Group to re-appear on the desktop. This does not happen with 'standard' applications which use the standard Windows UI elements.
As you can imagine, if you have Groups of Outlook, Excel and Word documents all active at the same time you get multiple frame outlines on the desktop when they are minimised and it is easy to re-activate them accidentally with an inadvertent mouse click on the desktop. Annoying.
Screenshot of desktop section showing frame bug.
I'm using the latest 1803 version of Windows 10, although it also happens with 1709 and the latest 1.17 version of Groupy.
