FROM_UNIXTIME(negativeDecimal) not behaving as InnoDB

DROP TABLE IF EXISTS t1;

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

INSERT INTO t1 VALUES (-0.1);

SELECT FROM_UNIXTIME(a) FROM t1;

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

| FROM_UNIXTIME(a)      |

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

| 1970-01-01 04:00:00.1 |

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

DROP TABLE IF EXISTS t1;

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

INSERT INTO t1 VALUES (-0.1);

SELECT FROM_UNIXTIME(a) FROM t1;

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

| FROM_UNIXTIME(a) |

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

| NULL             |

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