There is still one annoying problem which is that when you click the "scatter resources" button even if random resources is on, the world builder only seems to put one of each luxury and one of each strategic resource, but plenty of bonus resources. This makes it necessary to hand place resources on original maps (super annoying for larger maps). It doesn't seem to make sense as the world builder and the game can both create a correct amount of resources for a randomly generated map as opposed to a hand created one.
That being said, it was improved in this patch with some new features which make it easier to use such as a minimap and a "zoom out to see the whole world" function.
Edit: Didn't see that this thread had been massively bumped. My bad.