BUG #6699: pg_restore with -j -- doesn't restore view that groups by primary key

The following bug has been logged on the website:

Bug reference: 6699
Logged by: Joe Van Dyk
Email address: joe(at)tanga(dot)com
PostgreSQL version: 9.1.4
Operating system: OSX
Description:

$ pg_restore -O -j 4 ~/tanga.dump -d tanga_dev_full_backup

pg_restore: [archiver (db)] Error while PROCESSING TOC:
pg_restore: [archiver (db)] Error from TOC entry 417; 1259 66296 VIEW
site_channels monkey
pg_restore: [archiver (db)] could not execute query: ERROR: column
"channels.start_at" must appear in the GROUP BY clause or be used in an
aggregate function
LINE 2: SELECT channels.id, channels.start_at, channels.end_at, ...
^
Command was: CREATE VIEW site_channels AS
SELECT channels.id, channels.start_at, channels.end_at, channels.title,
channels.descriptio...

site_channels view definition:

View definition:
SELECT channels.id, channels.start_at, channels.end_at, channels.title
FROM channels
LEFT JOIN channels_products cp ON cp.channel_id = channels.id
LEFT JOIN buyable_products bp ON bp.id = cp.product_id
GROUP BY channels.id;

channels.id is a primary key.