Hash join algorithm should not be used to join materialized derived table / view by equality

CREATE TABLE t1 (

  id int NOT NULL,

  amount decimal DEFAULT NULL,

PRIMARY KEY (id)

)  ENGINE=MyISAM;

CREATE TABLE t2 (

  id int NOT NULL,

  name varchar(50) DEFAULT NULL,

PRIMARY KEY (id)

) ENGINE=MyISAM;

INSERT INTO t1 VALUES

(1, 10.0000), (2, 20.0000), (3, 30.0000), (4, 40.0000),

(5, NULL), (6, NULL), (7, 70.0000), (8, 80.0000);

INSERT INTO t2 VALUES 

(1,'A'), (2,'B'), (3,'C'), (4,'D'), (5, NULL), (6, NULL),

(7,'E'), (8,'F'), (9,'G'), (10,'H'), (11, NULL), (12, NULL);

set join_cache_level=4;

EXPLAIN

SELECT t2.id,t2.name,t.total_amt 

  FROM  t2

        LEFT JOIN

        (SELECT id, sum(amount) total_amt FROM t1 GROUP BY id) AS t

        ON t2.id=t.id

  WHERE t2.id < 3;

MariaDB [test]> EXPLAIN

    -> SELECT t2.id,t2.name,t.total_amt 

    ->   FROM  t2

    ->         LEFT JOIN

    ->         (SELECT id, sum(amount) total_amt FROM t1 GROUP BY id) AS t

    ->         ON t2.id=t.id

    ->   WHERE t2.id < 3;

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

| id   | select_type | table      | type     | possible_keys | key        | key_len | ref        | rows | Extra                               |

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

|    1 | PRIMARY     | t2         | range    | PRIMARY       | PRIMARY    | 4       | NULL       |    2 | Using where                         |

|    1 | PRIMARY     | <derived2> | hash_ALL | key0          | #hash#key0 | 5       | test.t2.id |    8 | Using join buffer (flat, BNLH join) |

|    2 | DERIVED     | t1         | index    | NULL          | PRIMARY    | 4       | NULL       |    8 |                                     |

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