Tag sidebar should remember the last selection when reactivated

If I have selected a set of notes with Tag Sidebar, e.g. those tagged to-do, and then press F5 (tag Sidebar toggle) my view changes and I see ALL notes. This is not what I expected. Surely if I press F5 twice I should have the view I started with.
(http://cintanotes.com/forum/viewtopic.php?f=4&t=149)