Hello,
If you take a look at the changelog, you'll see that the cart and the wishlist have been modified in the past to make them responsive.
Now, you will also see that the view have been completely rewrote for HikaShop 3.0 since they were some issues with these views.
And you will also see that the responsive for cart and wishlist has been re-done for HikaShop 3.2.1.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.