1 The [[/ikiwiki/directive/toc]] directive scrapes all headings from the page, including those in the sidebar. So, if the sidebar includes navigational headers, every page with a table of contents will display those navigational headers before the headers in that page's content.
3 I'd like some way to exclude the sidebar from the table of contents. As discussed via Jabber, perhaps toc could have a config option to ignore headers inside a nav tag or a tag with id="sidebar".