Off the top of my head, I can’t remember where/if that used to go anywhere different. Can anyone else comment? Might be a new bug.
I am not sure if this is the proper way to do this, but to fix this problem, I changed the code in the bp-core-adminbar.php on the following lines from:
echo '<li id="bp-adminbar-notifications-menu"><a href="' . $bp->loggedin_user->domain . '/">';
to
echo '<li id="bp-adminbar-notifications-menu"><a href="' . $bp->loggedin_user->domain . 'messages/">';
Hope this works for others who might have had this problem
Cheers
Chew