Ticket #14562: 14562.diff

wp-admin/includes/list-table-users.php

@@ -265 +265 @@
                                         break;
                                 default:
                                         $r .= "<td $attributes>";
-                                        $r .= apply_filters( 'manage_users_custom_column', '', $column_name, $user_object->ID );
+                                        ob_start();
+                                        do_action( 'manage_users_custom_column', $column_name, $user_object->ID );
+                                        $r .= ob_get_clean();
                                         $r .= "</td>";
                         }
                 }