CREATE / DROP PROCEDURE not logged with audit plugin

The commands

DELIMITER //

CREATE PROCEDURE simpleproc (OUT param1 INT)

 BEGIN

  SELECT COUNT(*) INTO param1 FROM t;

 END;

//

DELIMITER ;

DROP PROCEDURE simpleproc ;

will not be logged with

set global server_audit_events = "CONNECT,QUERY_DDL,QUERY_DCL";

also not with QUERY_DML

set global server_audit_events = "CONNECT,QUERY_DDL,QUERY_DCL,QUERY_DML";

with adding QUERY it works.

set global server_audit_events = "CONNECT,QUERY_DDL,QUERY_DCL,QUERY_DML,QUERY";

In the KB CREATE / DROP PROCEDURE will not classified as DDL.

—except CREATE/DROP [PROCEDURE / FUNCTION / USER] and RENAME USER (they're not DDL)

[https://mariadb.com/kb/en/mariadb-audit-plugin-log-settings/|
https://mariadb.com/kb/en/mariadb-audit-plugin-log-settings/]

Even if this would be true, it should be logged with adding QUERY_DML at least,
but SQL standard classify it also as DDL.

https://www.w3schools.in/mysql/ddl-dml-dcl/#DDL

In MariaDB and SQL standard DROP / CREATE Procedures is classified as DDL.