Hi, I have this issue on a windows 7 pro pc. It took me a long time trying to find out why the window was on my desktop. It is an invisible window but it has a bordered shadow outline, see the screen capture below. I run a piece of software called Dexpot which allows multiple desktop switching and the window in question only appears on desktop 1. I finally found in dexpot that I could display the list of windows on each desktop and found that the invisible one was belonging to AirDroid. If I force Dexpot to minimise the window it goes away but it reappears at every restart. Could you please address this issue in a future release thanks.
Paul.
Paul.