Write in your function.php file:
// qTranslate-X fix menu link title
add_filter( 'nav_menu_link_attributes', 'translate_btn_title_fix', 10, 4 );
function translate_btn_title_fix( $atts, $item, $args ){
if (isset($item->item_lang)) {
$atts['title'] = $item->attr_title;
}
return $atts;
}