Hi there,
so the Footer has been moved into the #page container, which is incorrect. And happens if there is some broken HTML on the page.
This will happen if a there is a missing closing HTML tag eg. </p>
or </div>
or </span>
etc.
As it seems to be happening on every product i would assume the error is part of some content that is present on all products.
Can you check any HTML that is consistently added to the products eg. inside the tabs ?