For some reason, new products are loaded when scrolling to the bottom of the page. How to fix?

Question

MODX

Hello.
Catalog section page: https://leroy-m.ru/mebel
Block with links to subsections. After it, a block with the output of all the products of the section.
There is a problem: when the page is scrolled to the very bottom, goods are loaded again at the end of the first block (which, in principle, should not be loaded), while their layout breaks.
The products themselves are displayed through PdoPage.

I don’t understand why the products in the first block are displayed at all ...
PS: ajaxMode was deleted - nothing has changed