Out of maybe a dozen tries, I have had one African hit that was not in South Africa, and that was a Spanish-owned island off the coast of the Sahara.

Try normal Google Maps, zoom out to see the whole world. Drag yellow StreetView dude, you will see blue overlay showing StreetView coverage (ignore isolated dots, these are Panoramio photos).

You will see that South Africa is the only place in Africa with coverage.