getting ERROR "relation 16401 has no triggers" with partition foreignkey alter

Hi,

I am getting ERROR:  relation 16401 has no triggers error while executing below query.

postgres=# create table tbl1(f1 int primary key);
CREATE TABLE
postgres=# create table tbl2(f1 int references tbl1 deferrable initially deferred) partition by range(f1);
CREATE TABLE
postgres=# create table tbl2_p1 partition of tbl2 for values from (minvalue) to (maxvalue);
CREATE TABLE
postgres=# insert into tbl1 values(1);
INSERT 0 1
postgres=# begin;
BEGIN
postgres=# insert into tbl2 values(1);
INSERT 0 1
postgres=# alter table tbl2 drop constraint tbl2_f1_fkey;
ALTER TABLE
postgres=# commit;
ERROR:  relation 16395 has no triggers