If a wiki is created with a # in its name, the edit tab will truncate the pagename at the #. Then it will commit the edits to the wiki_pages table with the incorrect pagename. Thus, the edits will be reflected in the edit tab, and in the view tab after an edit has been performed, but they will never make it to the main entry displayed by view.php. The truncated pagename field results in abandoned records in the database because there is no way to relate the wiki id to the truncated pagename. Have only confirmed this on 1.9.2, but I suspect it is in 1.9.3 and prior.