Restore price suffix for variable product in WooCommerce

restore-price-suffix-variable-product-woocommerce.php

add_filter('woocommerce_get_price_suffix', function ( $html, $product, $price, $qty ) {
     if ( ! $html && $product instanceof WC_Product_Variable) {
         // Copied from plugins/woocommerce/includes/abstracts/abstract-wc-product.php#get_price_suffix
         if ( ( $suffix = get_option( 'woocommerce_price_display_suffix' ) ) 
             && wc_tax_enabled() 
             && 'taxable' === $product->get_tax_status() 
         ) {
             $replacements = array(
                 '{price_including_tax}' => wc_price( wc_get_price_including_tax( $product, array( 'qty' => $qty, 'price' => $price ) ) ),
                 '{price_excluding_tax}' => wc_price( wc_get_price_excluding_tax( $product, array( 'qty' => $qty, 'price' => $price ) ) ),
             );
             $html = str_replace( array_keys( $replacements ), array_values( $replacements ), ' <small class="woocommerce-price-suffix">' . wp_kses_post( $suffix ) . '</small>' );
         }
     }
 
     return $html;
}, 10, 4);