primary key of partitioned table referenced by foreign table, v11, v12 clarification

Hi Team,

I am getting the below error when I am referencing Primary Key of parents
table from checking table in Postgres version 11. I went through
documentation of Postgres 12, where is mentioned that, "Primary key of the
partitioned table can be referenced by other foreign tables."

I would like to know if the below error is something that is fixed or
something else.

test=# insert into checking values(1,'tom',1);
ERROR: insert or update on table "checking" violates foreign key
constraint "checking_artist_fkey"
DETAIL: Key (artist)=(1) is not present in table "parent".
test=#