Request on Zulip:
Please update https://mariadb.com/kb/en/using-mariadb-binlog/
The server is not using statement based binlog as default.
Please also add a ling to 'binlog_format'
https://mariadb.com/kb/en/binary-log-formats/ is also wrong regarding the default.

For mariadb binlog to be readable by a server, one must use --base64-output=auto
Otherwise row events will no be printed !