BUG #5360: system column named "text"

The following bug has been logged online:

Bug reference:      5360
Logged by:          Sergey Manakov
Email address:      vialorn@gmail.com
PostgreSQL version: 8.4.2
Operating system:   Fedora Core 8
Description:        system column named "text"
Details:

Hi! I'am from Russia and write English ugly, but i'am must to try...

I have some table with column named "remark" and without column named
"text". I wrote SQL where try to select column named "text" by mistake:

SELECT st.text
FROM sometable st

Where error expected, but query executed without error! Query result is one
column contains text representation of ROWs.

Is this a bug, or I'am look for description in docs badly?