BuddyPress.org

Actually, for me, autocomplete does not even work on BP.org. I composed a message a couple of days ago to DJPaul and JJJ–who are both friends–and the autocomplete was AWOL. I just tried again, and no dice.

There is also an issue with messages not getting sent which is being discussed here:

https://buddypress.org/forums/topic/buddpressorg-messages-broke