Partition by system_time can be converted into table but not back

create or replace table t (a int) with system versioning partition by system_time limit 10 partitions 3;

alter table t convert partition p0 to table tp;

alter table t convert table tp to partition p0;

bug.t2                                   [ fail ]

        Test ended at 2022-10-21 00:36:09

CURRENT_TEST: bug.t2

mysqltest: At line 5: query 'alter table t convert table tp to partition p0' failed: ER_PARTITION_WRONG_TYPE (4113): Wrong partitioning type, expected type: `SYSTEM_TIME`