Mouse Movement

On my setup I like to run the games in "Window" mode so I can multi task on my other monitor when needed or streaming.  What I found was that I have to move the box in the strategic map in order to move to a different location.  In most games like this, just moving the cursor to the top/bottom/left/right moves the map.  Am I missing a setting or do you have to use the strategic map?  Thanks..