Re: autocomplete not functioning when composing message
https://trac.buddypress.org/ticket/2419
With the “Friends” component disabled, autocomplete on the “Send To” field in “Messages > Compose” should work for all members. Otherwise there’s no way to choose a recipient. You can write a message but you can’t send it. The only way to send a message is to visit the recipient’s profile and click “Send Private Message”. If you can message anyone by visiting their profile, why not be able to message anyone by visiting “Messages > Compose”? With “Friends” turned on, autocomplete could go back to using just friends. But with “Friends” turned off, autocomplete should work for all members.
Essentially, turning off “Friends” should be like saying that everyone is a friend… rather than like saying that no one is a friend. You can see all members in the member directory anyway.