This should have dealt with quite a few versions back so something may have crept back in. If you can ensure this isn’t some odd plugin issue and that this definitely wasn’t happening in 1.6 please open a ticket on http://buddypress.trac.wordpress.org using your site credentials.
I will just add though that a quick test on a local install running trunk does NOT show any issue like this, so check carefully it isn’t plugin issue also scan through trac to see if there was a recent ticket and fix put in place.
