Wrong results with optimizer_switch='semijoin=off'

CREATE TABLE t1 (id int, d1 TIMESTAMP);

INSERT INTO t1 (id,d1) VALUES (1,'2022-11-15 11:00:00.0'),(1,'2022-11-15 10:00:00.0'),(1,'2022-11-14 11:00:00.0');

select * FROM t1 where d1 in (select d1 from t1 );

set optimizer_switch='semijoin=off';

select * FROM t1 where d1 in (select d1 from t1 );

MariaDB [test]> select * FROM t1 where d1 in (select d1 from t1 );

+------+---------------------+

| id   | d1                  |

+------+---------------------+

|    1 | 2022-11-15 11:00:00 |

|    1 | 2022-11-15 10:00:00 |

|    1 | 2022-11-14 11:00:00 |

+------+---------------------+

3 rows in set (0,002 sec)

MariaDB [test]> set optimizer_switch='semijoin=off';

Query OK, 0 rows affected (0,000 sec)

MariaDB [test]> select * FROM t1 where d1 in (select d1 from t1 );

Empty set (0,002 sec)

MariaDB [test]> analyze select * FROM t1 where d1 in (select t1.d1 from t1 );

+------+--------------+-------+------+---------------+------+---------+------+------+--------+----------+------------+-------------+

| id   | select_type  | table | type | possible_keys | key  | key_len | ref  | rows | r_rows | filtered | r_filtered | Extra       |

+------+--------------+-------+------+---------------+------+---------+------+------+--------+----------+------------+-------------+

|    1 | PRIMARY      | t1    | ALL  | NULL          | NULL | NULL    | NULL | 3    | 3.00   |   100.00 |       0.00 | Using where |

|    2 | MATERIALIZED | t1    | ALL  | NULL          | NULL | NULL    | NULL | 3    | NULL   |   100.00 |       NULL |             |

+------+--------------+-------+------+---------------+------+---------+------+------+--------+----------+------------+-------------+

2 rows in set (0,002 sec)