dissapearing windows and panel

[Marius Andreiana]

In fc4t2, with development xorg/gtk/gnome updated, panel and windows
disappear from time to time. alt+tab shows icons for all windows opened,
but after switching to a window it's not displayed. Sometimes clicking
in a window makes it disappear. After some random clicks and switching
desktop the normal behavior resumes, for a while.

I cannot reproduce this reliably. Anyone else seeing it?

-- 
Marius Andreiana