I'm not sure if this is related or not, and I cannot reproduce, so this is more of a note than a complaint.
I was using Beta 1 and did _something_ to cause Slick to go full-screen. No title bar, no borders, nothing but the menu bar. I could open dialogs with little problem, and all keyboard shortcuts worked. I searched help for some way to get back to a normal window to no avail.
So I blew away my config directory & restarted - everything back to normal.