Limit items in cat checkout

-- url of the page with the problem -- : wpb.es/
-- HikaShop version -- : 2.2.3
-- Joomla version -- : 3.2
-- PHP version -- : 5.4
-- Browser(s) name and version -- : XXXXX x.x.x
-- Error-message(debug-mod must be tuned on) -- : Error_message

Hi

I set 1 unit in configuration/checkout/limit item in cart, it works fine, but there is a problem if the customer add 1 item in the cart and go back in the browser, he can add more items in the cart and don't work the limit.

How can I solve it?

Thanks

Regards

Hello,
I just tested it on my end and through your website and it seems to be working fine, Can you give me more information about your issue through some screenshots for example ?