Data view - when query returns error

Hi,

in data view when a query returns error, message isn't displayed,
create 2 table table1 and table2, then open table1 data view with filter:
id=(SELECT table1_id FROM table2),
an empty grid appears, maybe better to display error message (query has an
error: "more than one row returned by a subquery used as an expression").
(PGAdmin 1.14.3, PostgreSQL 9.1.4, Windows XP x86)

here is sql for table and data:
CREATE TABLE table1
(
id serial NOT NULL,
description character varying(50),
CONSTRAINT table1_pkey PRIMARY KEY (id )
)
WITH (
OIDS=FALSE
);
CREATE TABLE table2
(
id serial NOT NULL,
table1_id integer NOT NULL,
description character varying(50),
CONSTRAINT table2_pkey PRIMARY KEY (id )
)
WITH (
OIDS=FALSE
);
INSERT INTO table1 (description) VALUES ('a');
INSERT INTO table1 (description) VALUES ('b');
INSERT INTO table1 (description) VALUES ('c');

INSERT INTO table2 (table1_id, description) VALUES (1, 'aa');
INSERT INTO table2 (table1_id, description) VALUES (2, 'bb');
INSERT INTO table2 (table1_id, description) VALUES (3, 'cc1');
INSERT INTO table2 (table1_id, description) VALUES (4, 'cc2');