please create jira issue for that.
I'm just implementing RichFaces 4 and ran into this issue while converting our web applications. Is there no workaround for this? As small an item as this may seem, it is a major missing piece of UI behavior. The user needs to know to enter a space to see the full list? There may be two items or 100 items in the full list but you want the user to either enter a space or try letters a-z? Am I missing something?