In my opinion, windows 10 has a lot of bugs. I had the same issue with the software tcpview of sysinternals. When changing from 2 monitors to 1 monitor, the selected app is on "shown" on the other monitor that doens't exsists. Maximizing the scren like U said, works. Sometimes, when you selecte the application, you can switch the application by pressing the "windows logo" and arrow keys. The same is for creating new folders, in order to see them, I need to refresh my dekstop, by pressing F5. Sometimes the clipboard is locked, and you can't paste from it. They made changes to the clipboard in order to have multiple items on it, since then it doens't work stable anymore.