Thread:Extension talk:WikiSEO/Page title gets reset after edit, appears again after purge/reply (2)

It seems http://jimbojw.com/wiki/index.php?title=Doing_more_with_MediaWiki_parser_extensions explained why WikiSEO works once and stops working the next time -- when a parser hook is used. However WikiSEO is using a combination of BeforePageDisplay (which is not a parser hook) and ParserFirstCallInit (a parser hook). Don't know if this is still the reason.