Comment 1 for bug 1179193

Actually FTS optimize thread is started not always. It is not started if srv_archive_recovery is off. See the following code in innobase_start_or_create_for_mysql():

                recv_recovery_from_checkpoint_finish();

                if (srv_apply_log_only) {
                        goto skip_processes;
                }

So this is "apply archived logs" specific bug because it does not skip fts initialization.