Ticket #44368: 44368.diff

src/wp-admin/includes/class-wp-ms-sites-list-table.php

@@ -406 +406 @@
         public function column_users( $blog ) {
                 $user_count = wp_cache_get( $blog['blog_id'] . '_user_count', 'blog-details' );
                 if ( ! $user_count ) {
-                        $blog_users = get_users(
-                                array(
-                                        'blog_id' => $blog['blog_id'],
-                                        'fields'  => 'ID',
-                                )
+                        $args = array(
+                                'blog_id' => $blog['blog_id'],
+                                'fields'  => 'ID',
+                                'number'  => 1,
                         );
-                        $user_count = count( $blog_users );
+                        $blog_users = new WP_User_Query( $args );
+                        $user_count = $blog_users->get_total();
                         unset( $blog_users );
                         wp_cache_set( $blog['blog_id'] . '_user_count', $user_count, 'blog-details', 12 * HOUR_IN_SECONDS );
                 }