On 2014-10-16 Thu 04:41, martin rudalics wrote:
> The behavior seems time related: The longer another application's window
> covers that of Emacs, the higher is the probability that the Emacs frame
> is not redrawn.  Clicking on a menu item, resizing the frame, or
> switching do it via M-TAB gets it out of the situation.  Clicking with
> the mouse into the frame doesn't.

In my case, I can't see an influence of time but perhaps I haven't tried
hard enough.  I can make Emacs behave correctly, by clicking menu items,
by focusing it using M-TAB, and by resizing.  However, resizing does not
have this effect when Emacs is in fullscreen mode.

  Titus