rpl.rpl_start_alter_chain_basic, rpl.rpl_start_alter_restart_slave sometimes fail in BB with result content mismatch

rpl.rpl_start_alter_chain_basic 'innodb,stmt' w8 [ fail ]

        Test ended at 2022-10-24 16:10:18

CURRENT_TEST: rpl.rpl_start_alter_chain_basic

--- /home/buildbot/amd64-ubuntu-1804/build/mysql-test/suite/rpl/r/rpl_start_alter_chain_basic.result	2022-10-24 15:35:45.000000000 +0000

+++ /home/buildbot/amd64-ubuntu-1804/build/mysql-test/suite/rpl/r/rpl_start_alter_chain_basic.reject	2022-10-24 16:10:17.810733190 +0000

@@ -67,7 +67,7 @@

 connection server_3;

 select domain_id, seq_no from mysql.gtid_slave_pos order by seq_no desc limit 1;

 domain_id	seq_no

-0	12

+0	11

 include/stop_slave.inc

 set global slave_parallel_threads = 0;;

 set global slave_parallel_mode = optimistic;;

mysqltest: Result content mismatch

rpl.rpl_start_alter_restart_slave 'innodb,mix' w12 [ fail ]

        Test ended at 2023-01-20 16:04:19

CURRENT_TEST: rpl.rpl_start_alter_restart_slave

--- /home/buildbot/amd64-ubuntu-2204-debug-ps/build/mysql-test/suite/rpl/r/rpl_start_alter_restart_slave.result	2023-01-20 15:58:58.000000000 +0000

+++ /home/buildbot/amd64-ubuntu-2204-debug-ps/build/mysql-test/suite/rpl/r/rpl_start_alter_restart_slave.reject	2023-01-20 16:04:19.044075982 +0000

@@ -83,7 +83,7 @@

 # Everything from the master binlog must have been applied now:

 select domain_id, seq_no from mysql.gtid_slave_pos order by seq_no desc limit 1;

 domain_id	seq_no

-0	7

+0	6

 # slave gtid state is 0-1-7

 # The list of events after the slave has synchronized must have both CA:

 show binlog events  from <binlog_start>;

mysqltest: Result content mismatch