rpl.rpl_perfschema_applier_status_by_worker failed in bb with: Test assertion failed

rpl.rpl_perfschema_applier_status_by_worker 'mix' w1 [ fail ]

        Test ended at 2021-04-22 17:54:51

CURRENT_TEST: rpl.rpl_perfschema_applier_status_by_worker

mysqltest: In included file "./include/assert.inc": 

included from /usr/share/mysql/mysql-test/suite/rpl/t/rpl_perfschema_applier_status_by_worker.test at line 98:

At line 168: Test assertion failed in assertion.inc

The result from queries just before the failure was:

< snip >

**** SHOW BINLOG EVENTS on server_1 ****

binlog_name = 'master-bin.000001'

SHOW BINLOG EVENTS IN 'master-bin.000001';

Log_name	Pos	Event_type	Server_id	End_log_pos	Info

master-bin.000001	4	Format_desc	1	256	Server ver: 10.6.0-MariaDB-1:10.6.0+maria~groovy-log, Binlog ver: 4

master-bin.000001	256	Gtid_list	1	285	[]

master-bin.000001	285	Binlog_checkpoint	1	329	master-bin.000001

master-bin.000001	329	Gtid	1	371	GTID 0-1-1

master-bin.000001	371	Query	1	461	use `test`; CREATE TABLE t1 (a INT)

**** SHOW RELAYLOG EVENTS on server_1 ****

relaylog_name = 'No such row'

SHOW RELAYLOG EVENTS IN 'No such row';

Log_name	Pos	Event_type	Server_id	End_log_pos	Info

connection slave;

Assertion text: 'Last_Seen_Transaction should show .'

Assertion condition: '"0-1-1" = ""'

Assertion condition, interpolated: '"0-1-1" = ""'

Assertion result: '0'

More results from queries before failure can be found in /dev/shm/var/1/log/rpl_perfschema_applier_status_by_worker.log