On Windows 7 and 8, I used to use Win+Arrow to move windows around. My standard move was to Win+<= a Chrome window and then move out a tab and Win+=>.
The problem with Windows 10 is that when I do that the second window becomes unresponsive to keystrokes and mouse interactions. That's very weird. What is happening here, is that a bug? I tried to reproduce that with Firefox but I couldn't. But I also can see that since Windows 10 has virtual desktops and perhaps split screen, it can be a new feature that behaves differently from what I was used to.