404 with close btn of search sort item

After a seach in Commerce kickstart 7.x-2.5 (i.e. search-api) on a multilingual website (English and French), when I click on the "close/X" button (left to the sort item) to go back to the URL "mysite/fr/products", it leads to 404. In effect, the URL associated to the "close/X" button is duplicating the language prefix (i.e. "mysite/fr/fr/products" instead of "mysite/fr/products"). Has anybody seen this before and is there a solution ? Thanks.