roachtest: sqlsmith/setup=seed/setting=default failed about cockroach HOT 1 OPEN

CREATE FUNCTION f() RETURNS RECORD LANGUAGE plpgsql AS $$
BEGIN
  IF true THEN
    RETURN (1:::INT8, NULL, -1.0:::DECIMAL);
  ELSIF false THEN
    BEGIN
      RETURN (1:::INT8, 1.0:::DECIMAL, NULL);
    END;
  END IF;
END;
$$;

CREATE FUNCTION f() RETURNS RECORD LANGUAGE plpgsql AS $$
BEGIN
  IF true THEN
    RETURN (1:::INT8, NULL, -1.0:::DECIMAL);
  ELSIF false THEN
    -- BEGIN
      RETURN (1:::INT8, 1.0:::DECIMAL, NULL);
    -- END;
  END IF;
END;
$$;
-- ERROR: unimplemented: returning different types from a RECORD-returning function is not yet supported
-- SQLSTATE: 0A000
-- HINT: You have attempted to use a feature that is not yet implemented.
-- See: https://go.crdb.dev/issue-v/115384/v24.1
-- --
-- try casting all RETURN statements to the same type