Reply To: Update Cart Automatically on Quantity Change

Hello,

Try to replace that snippet with this one

add_action( 'wp_footer', 'bbloomer_cart_refresh_update_qty' );

function bbloomer_cart_refresh_update_qty() {
    if (is_cart()) {
        ?>
        <script type="text/javascript">
        jQuery('div.woocommerce').on('change', 'input.qty', function(){
            setTimeout(function() {
                jQuery('[name="update_cart"]').trigger('click');
            }, 100 );
        });
        </script>
        <?php
    }
}

Regards