When I select a solid background, blue for example, in the background settings, the blue background will appear on my desktop for two seconds and then will change to black and will stay black. In the little preview window it appears blue. I can continue selecting different colors but my desktop just stays black.
If I switch from solid background to horizontal gradient background and select any combination of colors including blue to blue, which has the same appearance as solid blue, everything works as expected. Image backgrounds work fine as well.
This is so strange. I am running openSUSE with GNOME desktop, can anyone explain to me what might be happening?