I'm able to navigate some drop-down menus by typing the first letter of an option in SDL Tridion 2011. This seems to work for out-of-the-box options like Schema Type, Field Type, and anything that's already part of the Content Manager Explorer (CME).
I can navigate a schema drop-down by typing letters in SDL Tridion 2009, but I can't seem to get the same behavior with 2011. For example, I'd like to be able to press "C" and have the CME select "Code" or "A" for "Article" (never mind the poor schema naming conventions in the screenshot).
I'd like to be able to navigate all CME drop-downs by letter; is this possible? What am I missing, and how might I enable this through configuration or an extension?