default values with default column timestamp type DateTime64 does not works

[antip00]

I created table with DateTime64

DROP TABLE IF EXISTS default.test_interval_64;
CREATE TABLE IF NOT EXISTS default.test_interval_64
(
    d DateTime64,
    x UInt32
) ENGINE = MergeTree() ORDER BY (d);

INSERT INTO default.test_interval_64(d,x) SELECT toDateTime(now()-(number*10)) AS d, rand() AS x FROM numbers(1000);

And I can't specify Datetime64 Field but I can specify everything else