Mouse not accurate in full screen after starting in small window?

[SC86]

I start the game in small window mode then I go to full screen after the plane/map/weather, and everything else is loaded.  In the small window the mouse is accurate and it can perform all of the functions over the switches and buttons and use the mouse wheel functions.  When I press

Left Alt+Enter the accuracy is gone.  This is just as of yesterdays 2.7 update, though in the previous version I would have to click the left mouse button to get it to function properly in any new window in full screen.

 

Thanks for any help, this makes the game unplayable