Full-screen mode not working

[Chama]

I have both DCS and DCS Open Beta loaded. Both seem to run correctly until I switched it to full-screen display. Once I did that none of the buttons work. Has anyone else experienced this problem and what is the solution???

[unltd]

Make sure you haven't alt tab'd focus to another app that may be running. If DCS is not the focused app, buttons won't work.