CEIL(negativeNarrowDecimal) inside another function returns a wrong result

DROP TABLE IF EXISTS t1;

CREATE TABLE t1 (a DECIMAL(10,1)) ENGINE=ColumnStore;

INSERT INTO t1 VALUES (-1.6);

SELECT CEIL(a), LEFT('abc', CEIL(a)) FROM t1;

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

| CEIL(a) | LEFT('abc', CEIL(a)) |

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

|      -1 | abc                  |

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

DROP TABLE IF EXISTS t1;

CREATE TABLE t1 (a DECIMAL(10,1)) ENGINE=InnoDB;

INSERT INTO t1 VALUES (-1.6);

SELECT CEIL(a), LEFT('abc', CEIL(a)) FROM t1;

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

| CEIL(a) | LEFT('abc', CEIL(a)) |

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

|      -1 |                      |

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