[bug]? insert returning composite type fails

Hello guys,
In my db (version 15) I've defined a composite type with some domains

CREATE DOMAIN my_feat.audit_record_jsonb_domain
AS jsonb
NOT NULL;

ALTER DOMAIN my_feat.audit_record_jsonb_domain OWNER TO postgres;

CREATE DOMAIN my_feat.boolean_true_domain
AS boolean
DEFAULT true
NOT NULL;

ALTER DOMAIN my_feat.boolean_true_domain OWNER TO postgres;
CREATE TYPE my_feat.bitemporal_record AS
(
user_ts_range tstzrange,
db_ts_range tstzrange,
has_future_record timestamp with time zone,
audit_record my_feat.audit_record_jsonb_domain,
is_valid my_feat.boolean_true_domain
);

ALTER TYPE my_feat.bitemporal_record
OWNER TO postgres;
So I've a table like that:
CREATE TABLE IF NOT EXISTS my_feat.try_bt_info
(
id bigint NOT NULL GENERATED BY DEFAULT AS IDENTITY ( INCREMENT 1 START
1 MINVALUE 1 MAXVALUE 9223372036854775807 CACHE 1 ),
bt_info my_feat.bitemporal_record,
CONSTRAINT try_bt_info_pk PRIMARY KEY (id)
)

TABLESPACE pg_default;

ALTER TABLE IF EXISTS my_feat.try_bt_info
OWNER to postgres;

When I try an insert asking to return bt_info I catch and error; here the
example:

do $$
declare
_bt_info my_feat.bitemporal_record;
begin
insert into my_feat.try_bt_info (bt_info)
values (row(
tstzrange(now(),'infinity','[)')
, tstzrange(now(),'infinity','[)')
, null
, '{"user_id":"alpha"}'
, true)::my_feat.bitemporal_record
)
returning bt_info into _bt_info;

raise notice '%', _bt_info;
end;
$$;

Error:
ERROR: Too many commas.malformed range literal: "("[""2023-07-06
23:50:30.991122+02"",infinity)","[""2023-07-06
23:50:30.991122+02"",infinity)",,"{""user_id"": ""alpha""}",t)" ERROR:
malformed range literal: "("[""2023-07-06
23:50:30.991122+02"",infinity)","[""2023-07-06
23:50:30.991122+02"",infinity)",,"{""user_id"": ""alpha""}",t)" SQL state:
22P02
Detail: Too many commas.

It seems to be a bug, but maybe there is a workaround; any idea?

--
Domenico L.

per stupire mezz'ora basta un libro di storia,
io cercai di imparare la Treccani a memoria... [F.d.A.]