WooCommerce – Exclude products from child categories

For our project on the categoy page we need to exlcude the product from the child categories.

This is working good: https://gist.github.com/ibndawood/17ade59c2f856a59e42a5ebf91fbb357

function exclude_product_cat_children($wp_query) {
if ( isset ( $wp_query->query_vars[‘product_cat’] ) && $wp_query->is_main_query()) {
$wp_query->set(‘tax_query’, array(
array (
‘taxonomy’ => ‘product_cat’,
‘field’ => ‘slug’,
‘terms’ => $wp_query->query_vars[‘product_cat’],
‘include_children’ => false
)
) );
}
}

add_filter(‘pre_get_posts’, ‘exclude_product_cat_children’, PHP_INT_MAX );

++++

Only with this snippet activated the filtering at the category pages is not working anymore.

Can you please check this?