After killing all the Windows 10 apps running in the background (put all the app commands into a new folder called disabled), Object dock stopped showing the invisible app icon... YIPEEEEEEEEEE!
Yesterday, it reappeared after a Window 10 update was installed. What I discovered was the Microsoft Edge was once again the default browser app. I changed it back to Internet Explorer or Firefox, the invisible icon went away again. Of course, it's only been one day.... <sigh>
