"Add to basket" from search results does not work: basket remains empty



On this (public) gallery http://tools.razuna.com/index.cfm?fa=c.share&fid=B9C83FCC51E34246BF3977D0DF8F7E83, adding an item from a search result actually adds nothing to the basket.

Actually, it seems that the “back to share” link, which is the only way to find the “basket” button, somehow refreshes the browser and empties the basket.

Bug? Setting?