Userstat does not register updated/deleted/read rows for Columnstore tables

MariaDB [test]> set global userstat=1;

Query OK, 0 rows affected (0.001 sec)

MariaDB [test]> create table t (a int) engine=columnstore;

Query OK, 0 rows affected (0.855 sec)

MariaDB [test]> show table_statistics \G

Empty set (0.001 sec)

MariaDB [test]> insert into t values (1),(2);

Query OK, 2 rows affected (0.298 sec)

Records: 2  Duplicates: 0  Warnings: 0

MariaDB [test]> show table_statistics \G

*************************** 1. row ***************************

           Table_schema: test

             Table_name: t

              Rows_read: 0

           Rows_changed: 2

Rows_changed_x_#indexes: 2

1 row in set (0.001 sec)

MariaDB [test]> update t set a = 3 where a = 1;

Query OK, 1 row affected (1.236 sec)

Rows matched: 1  Changed: 1  Warnings: 0

MariaDB [test]> select * from t;

+------+

| a    |

+------+

|    3 |

|    2 |

+------+

2 rows in set (0.017 sec)

MariaDB [test]> delete from t where a = 3;

Query OK, 1 row affected (0.181 sec)

MariaDB [test]> show table_statistics \G

*************************** 1. row ***************************

           Table_schema: test

             Table_name: t

              Rows_read: 0

           Rows_changed: 2

Rows_changed_x_#indexes: 2

1 row in set (0.001 sec)