Deactivating WPML breaks shortcode functionality

I installed and tested WPML for about a week. After deactivating it I realized the product_category shortcode wasn’t working as usual anymore. Like on the homepage, only 2 instead of 4 products were visible, but it depended on sorting and the particular category used in the shortcode.

Tuns out I was able to fix it by using the function provided on this site:
https://websavers.ca/woocommerce-shortcodes-not-showing-products

function custom_woocommerce_shortcode_products_query( $args ) {
   if ( 'yes' == get_option( 'woocommerce_hide_out_of_stock_items' ) ) {
     $args['meta_query'][] = array(
       'key' => '_stock_status',
       'value' => 'instock',
       'compare' => 'IN'
     );
   }
   return $args;
}

add_filter( 'woocommerce_shortcode_products_query', 'custom_woocommerce_shortcode_products_query' );

Thing is: why is this needed only after installing and deactivating WPML, never had issues with the shortcodes before. Somethign WPML might have messed up?

The page I need help with: [log in to see the link]