Hack this file: In modules/mod_mainmenu/helper.php on row 330, replace:
<?php ... $tmp->url = JURI::base(); ... ?>
<?php ... $tmp->url = str_replace(array($tmp->route.'/', $tmp->route), '', JRoute::_( $tmp->url )); ... ?>
Dissapearing Menu problem and Home button FIXED !
But ther are still some few annoying bugs Like for example) Home button name appears as page title, on translated page.