When viewing a list of posts in the posts window, left clicking the column heading "Status" for the Status column doesn't result in the posts being sorted by their designated states. Downloaded, idle/old, idle/new, etc, continue to be intermingled with one another.
It doesn't seem to matter if the list of posts is highlighted or not before attempting to sort them by status.
This feature is (would be) very helpful in that it makes it easy to display posts by their designated status, highlight downloaded posts, duplicate posts, etc. and then mark them old by deleting them, so that they no longer appear in the posts list window.