Hi Jim,
This isn't a bug - Quest Points don't display on a User Profile (http://runetrack.com/profile.php?user=jim360, http://runetrack.com/profile.php?user=sword_kill11). This is because it would be impossible for the system to know how many Quest Points you have, seeing as Jagex does not publicly release that number.
However, if you would like to obtain a fully customizable signature like the one I have in my signature below this post, complete with Quest Points, go here: http://runetrack.com/sigs/stat.php
