Market press and qtranslate: problems in the product titles

I'm using marketpress plugin with gridmarket theme, and doing the multilanguage with qtranslate.
Everything is ok in the homepage, categories page and single product page.
But when I use global products widget (or global options in the homepage), or shortcodes in a page, the title of the product shows for example:
<!--:es-->Pack vino y aceite<!--:--><!--:en-->Wine and oil pack<!--:-->
How can I change this?