Wordpress Website - PHP/Java FIX

If you visit the link below you will notice when the page loads, you are taken down the page away from the top. And also you will see the URL changes too.

http://thechocolution.com/chocolate-shop/mayan-magic-chocolate-kit/

This is the bug I want removed from the website. It happens when you look at any individual product page

I have had people who thought they could fix it before and have failed.

E-commerce platform: WOOCommerce
Website Theme: Propulsion by Kriesi