Can't move mouse cursor outside screen

[andershub4]

Precondition: Use 2 screens and start the game in one of them (the primary in my case). Ensure the game is started in Fullscreen mode. This is done automatically in Release build.

Problem: When the game is started, move the cursor to the other screen and click on a window (eg Chrome webbrowser) to set focus. Then move back the cursor to the game and click to set focus.
Now you can't move back the cursor to the other screen again. It is stuck in the game screen.