Problem: ======== Extension:OpenID adds a new pref tab ("OpenID") [1,3], but the <fieldset>...</fieldset>, and <legend>section header texts</legend> are apparently _not_ correctly set up in the page HTML, or they are not correctly rendered. See [3]. Pls compare [3] (sections missing) and [4] (correctly rendered, see yellow marking). Is is a bug in the core which effects extensions ? What am I doing wrong in function onGetPreferences [1], or, what is missing in the code ? [1] https://gerrit.wikimedia.org/r/gitweb?p=mediawiki/extensions/OpenID.git;a=b… [2] https://bugzilla.wikimedia.org/show_bug.cgi?id=45586 [3] http://i.imgur.com/UGqjwKK.png [4] http://i.imgur.com/90T3xZX.png