Incorrect results when using BNLH join instead of BNL join with views

CREATE TABLE t1 (c1 text, c2 int);

INSERT INTO t1 VALUES ('a',1), ('c',3), ('g',7), ('d',4), ('c',3);

CREATE TABLE t2 (c1 text, c2 int);

INSERT INTO t2 VALUES ('b',2), ('c',3);

CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;

MariaDB [test]> SELECT v1.c1, v1.c2, t2.c1, t2.c2 FROM v1, t2 WHERE v1.c1=t2.c1;

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

| c1   | c2   | c1   | c2   |

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

| c    |    3 | c    |    3 |

| c    |    3 | c    |    3 |

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

2 rows in set (0.006 sec)

MariaDB [test]> set @@join_cache_level=4;

Query OK, 0 rows affected (0.000 sec)

MariaDB [test]> SELECT v1.c1, v1.c2, t2.c1, t2.c2 FROM v1, t2 WHERE v1.c1=t2.c1;

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

| c1   | c2   | c1   | c2   |

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

| a    |    1 | b    |    2 |

| a    |    1 | c    |    3 |

| c    |    3 | b    |    2 |

| c    |    3 | c    |    3 |

| g    |    7 | b    |    2 |

| g    |    7 | c    |    3 |

| d    |    4 | b    |    2 |

| d    |    4 | c    |    3 |

| c    |    3 | b    |    2 |

| c    |    3 | c    |    3 |

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

10 rows in set (0.005 sec)