Sometimes my arrow keys will scroll the game in the opposite direction of what I intend. Or the game will scroll nonstop until it hits the edge of the map. This seems to happen when I have a city selected. Pressing an arrow key -- or scrolling with the mouse wheel -- will scroll the production window inside the city screen, and also create this unpredictable scrolling behavior on the map. As a workaround, is there a convenient way to deselect cities? (Selecting a unit, I guess?) More fundamentally, is there some way to restore arrow keys to their proper functionality when this happens? Thanks.