galera.galera_ftwrl_drain fails with wrong errno 1146

galera.galera_ftwrl_drain 'innodb'       [ fail ]

        Test ended at 2021-07-08 01:30:37

CURRENT_TEST: galera.galera_ftwrl_drain

mysqltest: At line 58: query 'INSERT INTO t2 VALUES (2)' failed with wrong errno 1146: 'Table 'test.t2' doesn't exist', instead of 1205...

The result from queries just before the failure was:

< snip >

INSERT INTO t1 VALUES (1);

connection node_2;

SET SESSION wsrep_sync_wait = 0;

SET SESSION wsrep_on = 0;

SET SESSION wsrep_on = 1;

SELECT COUNT(*) = 0 FROM t1;

COUNT(*) = 0

1

connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;

connection node_2a;

FLUSH TABLES WITH READ LOCK;;

connection node_2;

SET GLOBAL wsrep_provider_options = 'dbug=';

SET GLOBAL wsrep_provider_options = 'signal=apply_monitor_slave_enter_sync';

connection node_2a;

connection node_2;

SET SESSION lock_wait_timeout = 1;

SET SESSION innodb_lock_wait_timeout=1;

SET SESSION wait_timeout=1;

INSERT INTO t2 VALUES (2);