Documentation vor variable slave_run_triggers_for_rbr is not complete

It is not visible from documentation if this variable slave_run_triggers_for_rbr is dynamic or not:

https://mariadb.com/kb/en/replication-and-binary-log-system-variables/#slave_run_triggers_for_rbr

Our experiment says: yes it is:

SQL> show global variables like 'slave_run%';
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SQL> set global slave_run_triggers_for_rbr=LOGGING;
Query OK, 0 rows affected (0.000 sec)
SQL> show global variables like 'slave_run%';
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MDEV-5095 from Oleksandr points to the same direction
https://jira.mariadb.org/browse/MDEV-5095
If it really is changing in practice we will find out later in this PoC.