Ticket #43680: 43680.2.diff

src/wp-includes/class-wp-user-query.php

@@ -613 +613 @@
                         $this->total_users = (int) $wpdb->get_var( apply_filters( 'found_users_query', 'SELECT FOUND_ROWS()' ) );
                 }
 
+                /**
+                 * Filters the raw user / user fields results array.
+                 *
+                 * @since 5.0.0
+                 *
+                 * @param Array Array of users / user fields
+                 * @param WP_User_Query $this The WP_User_Query instance (passed by reference).
+                 */
+                $this->results = apply_filters_ref_array( 'users_results', array( $this->results, &$this ) );
+
                 if ( ! $this->results ) {
                         return;
                 }