Self referential foreign keys in partitioned table not working as expected - Mailing list pgsql-bugs

As mentioned at https://www.postgresql.org/message-id/18156-a44bc7096f0683e6%40postgresql.org this is a regression introduced in version 15.X and still present in 17.4.

I'm running the postgres:17.4-alpine docker official image.

drop table if exists test;

create table test (
    id_1 int4 not null,
    id_2 int4 not null,
    parent_id_1 int4 null,
    primary key (id_1, id_2),
    foreign key (parent_id_1, id_2) references test(id_1, id_2)
) partition by list(id_1);

create table test_1 partition of test for values in (1);
create table test_9 partition of test for values in (9);

insert into test values (1, 1, null), (1, 2, 1);

-- doesn't trigger an error
-- delete from test where (id_1, id_2) = (1, 1);

-- doesn't trigger an error
-- update test set id_1 = 9 where (id_1, id_2) = (1, 1);

Both deletion and update runs smoothly.

Also, potential cascade delete and cascade update rules are ignored.