Vlasta Ott

I confirm the situation and agree with you Graham – I don’t know too, waiting for answer like you…

Dirty hack, modify you search.php in child theme:

<?php if ( have_posts() ) {
	global $wp_query;
	if ($wp_query->post_count == 1) {
		$product = wc_get_product( $wp_query->post );
		if ( $product && $product->is_visible() ) {
			wp_safe_redirect( get_permalink( $product->id ), 302 );
			exit;
		}
	} else {
		get_template_part('woocommerce/archive', 'product');
	}
} else {
		get_template_part('woocommerce/archive', 'product');
	}
	?>