I just realized that I said I am “not” using the Flexible Container. I was wrong. I am using it now. I just activated it on the Elementor and when I click on the Container and go to the Advanced Settings, the “Sticky Column” for the container on XTemos is not there.
Please make the full backup of your site and check the issue on the Storefront theme to detect if our theme causes the problem. Storefront is a free theme developed by WooСommerce.