splotchy color on desktop background

[sean]

I've updated to rawhide, with the new funky fedora startup 
icon. The desktop background is a blue-gray. When I move a 
window across the desktop it leaves the desktop a slightly 
paler tone of blue-gray ( that is, where the window used to 
be.) Eventually the desktop is slightly splotchy from all 
various windows movements.


No real problem, but it looks a little odd.

sean