BUG #3493: Cannot find data with = operator

The following bug has been logged online:

Bug reference:      3493
Logged by:          Michal Niklas
Email address:      mn@heuthes.pl
PostgreSQL version: 8.1.9
Operating system:   Linux, x86-64, debian
Description:        Cannot find data with = operator
Details:

I cannot find just inserted data with = operator.
It can be found if I use LIKE.

My SQL looks like:
begin;
select version();
insert into customers (name) values ('KIOSK ');
select id,name from customers where name='KIOSK ';
select id,name from customers where name like 'KIOSK ';
rollback;


Result on my psql console:

isof_customer=# select version();
                                                     version
----------------------------------------------------------------------------
-------------------------------------
 PostgreSQL 8.1.9 on x86_64-pc-linux-gnu, compiled by GCC cc (GCC) 4.1.2
20061115 (prerelease) (Debian 4.1.1-21)
(1 row)

isof_customer=# insert into customers (name) values ('KIOSK ');
INSERT 437819002 1
isof_customer=# select id,name from customers where name='KIOSK ';
 id | name
---------------+------------------
(0 rows)

isof_customer=# select id,name from customers where name like 'KIOSK ';
 id | name
---------------+------------------
        218856 | KIOSK
(1 row)


This is problem in just one table in one database.  It works as expected on
just created tmp table and on other customers databases.  It works if I
change 'KIOSK ' to other text.  I tried 'vacuum analyze' on this table but
it didn't help.

Regards,
Michal Niklas
HEUTHES
Poland