BUG #5076: LEFT OUTER JOIN and WHERE madness

The following bug has been logged online:

Bug reference:      5076
Logged by:          Mauro Infantino
Email address:      mauro.infantino@latincontrol-soft.com
PostgreSQL version: 8.3.8
Operating system:   Windows
Description:        LEFT OUTER JOIN and WHERE madness
Details:

I'm just experiencing the same as in here,

http://archives.postgresql.org/pgsql-bugs/2008-06/msg00175.php

It was not happening for 8.3.7 (at least on Windows).

Thanks.