Inconsistency in the results when using the COALESCE function

There is an inconsistency in the results when using the COALESCE function.

Set up table t0:

CREATE TABLE t0 (c0 BIT, c1 BIT);

INSERT INTO t0 VALUES (0, 1);

Use COALESCE in a SELECT query:

(SELECT (COALESCE(t0.c0, t0.c1)) AS c0 FROM t0);

--Result: 48

Store the result of COALESCE in another table t1 and SELECT:

CREATE TABLE t1 AS (SELECT (COALESCE(t0.c0, t0.c1)) AS c0 FROM t0);

SELECT * FROM t1;

--Result: 0

The result should be consistent regardless of whether the result is directly selected or stored in another table.