Are there any rules or policy regarding which config options etc are made available in Ext Designer? I was under the (perhaps misguided?) impression that everything was available, but after 1 minute of using Ext Designer I hit problems because the Window container does not have a buttons config option.

What a shock when the very first thing I did was dropped a window into the design area and tried to setup "OK" and "Cancel" buttons!

Perhaps I missed something obvious... but it seems pointless to use Ext Designer for anything if standard features are not available. Is there something else I should be using or doing instead?