[BUGS] Seems bug in postgres_fdw?

Server A (timezone = 'US/Eastern')

Create table public.test_timestamp(

                col1 varchar,

                ins_ts timestamp without time zone not null default current_timestamp

) without oids;

 

( Assume time is 10:00:00 AM EST ) insert into public.test_timestamp( col1 ) values ('foo');

select ins_ts from public.test_timestamp;

--- Returns 10:00:00

 

delete from public.test_timestamp;

 

-- Local Server

Server B (timezone = 'US/Eastern')

CREATE SERVER server_1 FOREIGN DATA WRAPPER postgres_fdw OPTIONS (port '5433', dbname 'pgbench');

CREATE USER MAPPING FOR PUBLIC SERVER server_1 OPTIONS (password '');

Create foreign table public.foreign_table(

                col1 varchar

)  SERVER server_1

   OPTIONS (schema_name 'public', table_name 'test_timestamp');

 

( Assume time is 10:00:00 AM EST ) insert into public.foreign_table( col1 ) values ('from remote');

 

Now, on Server A, again issue

select ins_ts from public.test_timestamp;

--- Returns 15:00:00

Here , Why postgresql takes different time when remote table and foreign table have different definition for timestamp column?

I think create foreign table should not allowed , If allowed it should give same result.