Listener log rotation not working on Windows Server 2019 & DBMS 19?

Windows Server 2019, Oracle DBMS 19. I am trying to configure automatic log rotation (aka Network Log File Segmentation) of the listener .xml and plain-text logs per

https://docs.oracle.com/en/database/oracle/oracle-database/19/netrf/oracle-net-listener-parameters-in-listener-ora.html#…

My listener.ora contains

LISTENER =

  (DESCRIPTION_LIST =

    (DESCRIPTION =

      (ADDRESS = (PROTOCOL = TCP)(HOST = <FQDN to DBMS server>)(PORT = 1521))

      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))

    )

  )

ADMIN_RESTRICTIONS=ON

VALID_NODE_CHECKING_REGISTRATION=ON

LOG_FILE_NUM=5

LOG_FILE_SIZE=1

and I have restarted the Listener (actually the listener Windows service).

However, the log.xml file is now up to 3769 KB, and no additional files have been created.