UNIQUE column checks fail in InnoDB resulting in table corruption

SET autocommit=0,foreign_key_checks=0,unique_checks=0;

CREATE TABLE t (c1 INT KEY,c2 INT,UNIQUE (c2)) ENGINE=InnoDB;

INSERT INTO t VALUES (1,0),(2,0);  # Should fail with ERROR 1062 (23000): Duplicate entry '0' for key 'c2'

CREATE TABLE t (c2 INT);

CHECK TABLE t;

10.7.1-dbg>SET autocommit=0,foreign_key_checks=0,unique_checks=0;

Query OK, 0 rows affected (0.000 sec)

10.7.1-dbg>CREATE TABLE t (c1 INT KEY,c2 INT,UNIQUE (c2));

Query OK, 0 rows affected (0.023 sec)

10.7.1-dbg>INSERT INTO t VALUES (1,0),(2,0);  # Should fail with ERROR 1062 (23000): Duplicate entry '0' for key 'c2'

Query OK, 2 rows affected (0.007 sec)

Records: 2  Duplicates: 0  Warnings: 0

10.7.1-dbg>CREATE TABLE t (c2 INT);

ERROR 1050 (42S01): Table 't' already exists

10.7.1-dbg>CHECK TABLE t;

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

| Table  | Op    | Msg_type | Msg_text                                            |

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

| test.t | check | Warning  | InnoDB: Index 'c2' contains 0 entries, should be 2. |

| test.t | check | error    | Corrupt                                             |

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

2 rows in set (0.002 sec)

2021-11-01  8:41:40 4 [ERROR] InnoDB: Flagged corruption of `c2` in table `test`.`t` in CHECK TABLE; Wrong count