_main broken in sidebar

In http://johnabbe.wagn.org/Top_of_the_sidebar_to_ye (which is included in my *sidebar) I have:

{{_main+tags|labeled;title:Tags;item:link}}

It used to work, but now for example if you go to http://johnabbe.wagn.org/Sri_Lanka (or *any* page and double-click between the label "Tags" and the content "wikime" you can use the menu to edit the name and see that the card being shown is "Top of the sidebar to ye+tags".