Articles block: load more button not loading results

EN block form is breaking the articles block. 

When clicking on the load more button in the articles block, more results are not displayed in the front end on desktop. On mobile, more results are loaded. 

PL: https://www.greenpeace.org/poland/dzialaj/

Testing on GPI stagging: 

• with all blocks, no iframe ((iframe has also been removed but that did not cause more articles not loading) - https://release.k8s.p4.greenpeace.org/international/articles-block-does-iframe-code-break-the-load-more-button/
• without EN block and iframe: https://release.k8s.p4.greenpeace.org/international/articles-block-no-iframe-on-the-page/