Wrong action URL for subscription form with WPML in domain per language mode

When using the widget for subscription form on a sub page (e.g. “/contact-us”), the URL of the form’s action becomes “/contact-us/wp-admin/admin-ajax.php” which is incorrect.

I’ve traced the code to the this block (line 201-214) in knews.php:

if ((KNEWS_MULTILANGUAGE) && $knewsOptions['multilanguage_knews']=='wpml') {
	if (function_exists('icl_get_languages')) {

		global $sitepress_settings;
		if (isset($sitepress_settings['language_negotiation_type']) && $sitepress_settings['language_negotiation_type']==2) {

			$l = $this->pageLang();
			$knews_localized_url = $l['url'];
			if (substr($knews_localized_url, -1) != '/') $knews_localized_url .= '/';
			$knews_localized_admin = $knews_localized_url . 'wp-admin/';
			$knews_localized_url .= 'wp-content/plugins/knews';
		}
	}
}

I assume that this is because WPML is in the language mode with one domain per language that cause this.

http://wordpress.org/extend/plugins/knews/