Two STRAIGHT_JOIN queries produces inconsistent results when comparing text values

CREATE TABLE t0(c1 TEXT);

CREATE TABLE t1 LIKE t0;

CREATE INDEX i1 ON t1(c1(1)) VISIBLE;

INSERT INTO t0(c1) VALUES('29'), ('30');

INSERT INTO t1(c1) VALUES("⅗");

SELECT t0.c1 AS t0c1, t1.c1 AS t1c1 FROM t1 STRAIGHT_JOIN t0 ON t1.c1 < t0.c1;

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

| t0c1 | t1c1 |

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

| 30   | ⅗    |

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

1 row in set (0.00 sec)

SELECT t0.c1 AS t0c1, t1.c1 AS t1c1 FROM t0 STRAIGHT_JOIN t1 ON t1.c1 < t0.c1;

Empty set (0.00 sec)