When at no.wikipedia and trying to patrol changes on topics, it throws the following error (from core/includes/actions/MarkpatrolledAction.php):
if ( !$user->matchEditToken( $request->getVal( 'token' ), $rcId ) ) { throw new ErrorPageError( 'sessionfailure-title', 'sessionfailure' ); }
First reported onwiki at https://no.wikipedia.org/wiki/Topic:T2s14oka1p4yco2s