Commit 9a0d4f5c5da for woocommerce

commit 9a0d4f5c5da3c63b555cbdd90621e42204358990
Author: Vladimir Reznichenko <kalessil@gmail.com>
Date:   Fri Jul 3 13:28:21 2026 +0200

    [Performance] Audit wc_product_dropdown_categories usages in admin (#66202)

    Based on #66176, audit the usage of wc_product_dropdown_categories to identify similar unreported cases.
    Removes product counters from the brands filter on the products page in admin.

diff --git a/plugins/woocommerce/changelog/performance-audit-wc_product_dropdown_categories-usages-in-admin b/plugins/woocommerce/changelog/performance-audit-wc_product_dropdown_categories-usages-in-admin
new file mode 100644
index 00000000000..fa2852fb6ee
--- /dev/null
+++ b/plugins/woocommerce/changelog/performance-audit-wc_product_dropdown_categories-usages-in-admin
@@ -0,0 +1,4 @@
+Significance: minor
+Type: performance
+
+Audit wc_product_dropdown_categories usages in admin
diff --git a/plugins/woocommerce/includes/admin/class-wc-admin-brands.php b/plugins/woocommerce/includes/admin/class-wc-admin-brands.php
index d35b52eb018..53c0a6fe200 100644
--- a/plugins/woocommerce/includes/admin/class-wc-admin-brands.php
+++ b/plugins/woocommerce/includes/admin/class-wc-admin-brands.php
@@ -598,8 +598,6 @@ class WC_Brands_Admin {
 		if ( $brands_count <= apply_filters( 'woocommerce_product_brand_filter_threshold', 100 ) ) {
 			wc_product_dropdown_categories(
 				array(
-					'pad_counts'        => true,
-					'show_count'        => true,
 					'orderby'           => 'name',
 					'selected'          => $current_brand_slug,
 					'show_option_none'  => __( 'Filter by brand', 'woocommerce' ),
@@ -608,6 +606,10 @@ class WC_Brands_Admin {
 					'taxonomy'          => 'product_brand',
 					'name'              => 'product_brand',
 					'class'             => 'dropdown_product_brand',
+					// Performance note: pad_counts=0 skips the hierarchical count SQL — O(all published products), degrades linearly
+					// with catalog size. show_count=0 suppresses the raw wp_term_taxonomy.count that would otherwise render in its place.
+					'pad_counts'        => 0,
+					'show_count'        => 0,
 				)
 			);
 		} else {