Issue related to products combinations and URL Rewriting

[capi666]

Hi experts,

 

I have a big problem with products combinations in format Radio Button:

 

By default, it is selected the size XS... if the customer click in other size, in 1 second, automatically it seems that refresh the page and select the size XS again, why?

I checked in network that the URL that refresh is: https://www.myweb.com/es/index.php?controller=product&token=2218effaa0a8fe64e8a95456247820a5&id_product=27&id_customization=0&group[7]=42&qty=1

 

Any idea?

 

Thanks in advance,

Regards,