Can't use icon bar when logging out

[Ken Brooks <kenb rpath com>]

Scenario:

I "Log out" from a session with >12 open windows.  One of them needs to
ask me about saving a file; its icon at the bottom of the screen begins
to flash.  I click that icon, nothing happens.  Nothing happens in
response to most other user interface items either:  
typing, clicking close boxes, etc.  Finally someone moves windows out of
the way, revealing the "Save this file?" box, and I answer it, thus
removing the blockage, and the logout completes.

Is this not a user interface bug?  The icon blinks but I can't click it
to go see why?

Ken Brooks
rpath