multi-insert with composite type fails?

multi-insert-composites.sql

create domain required_int as integer check (not null);

create type xypoint as (
    name text,
    x required_int,
    y int
);

create table foo (
    description text,
    location xypoint
);

-- single insert works fine
insert into foo (description, location.name, location.x)
    values ('desc1', 'home', 1);

-- but a bulk insert fails
insert into foo (description, location.name, location.x)
    values
        ('desc2', 'work', 2),
        ('desc3', 'the bar', 3);