BUG #5877: problem with wild char used in where clause

The following bug has been logged online:

Bug reference: 5877
Logged by: Savita
Email address: savita(dot)halli(at)gmail(dot)com
PostgreSQL version: 8.3.5
Operating system: Solaris
Description: problem with wild char used in where clause
Details:

I have a table with id as primary key.
"slect id from table" gives me following data
id
--------------
AB1
AB2
AB3
AB4
(4 rows)

Now when I need ids which starts from A
select id from table where id like 'A%'; Gives the follwoing result set.

id
--------------
AB1
AB2
AB3
AB4
(4 rows)

When I ran query to get the ids which ends with B1
select id from table where id like '%B1'
does not return me any rows. Should it be not returning row with id AB1? Is
there known issue?

Thanks in advance
Savita