ENGINE=CONNECT prints broken byte sequence in warnings on truncation

CREATE OR REPLACE TABLE t1 (name varchar(20)) CHARSET=utf8mb3;

INSERT INTO t1 (name) VALUES ('Иванова'), ('Ivanova');

CREATE OR REPLACE TABLE t2 (name varchar(1)) ENGINE=CONNECT TABLE_TYPE=MYSQL DBNAME='test' TABNAME='t1' OPTION_LIST='host=localhost,user=bar,port=PORT' CHARSET=utf8mb3;

SELECT hex(name) from t2;

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

| Level   | Code | Message                                           |

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

| Warning | 1105 | Out of range value for column name at row 1       |

| Warning | 1265 | Data truncated for column 'name' at row 1         |

| Warning | 1105 | Out of range value И? for column 'name' at row 1  | <-- broken byte sequence

| Warning | 1105 | Out of range value for column name at row 2       |

| Warning | 1265 | Data truncated for column 'name' at row 2         |

| Warning | 1105 | Out of range value Iva for column 'name' at row 2 |

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