It would help me understand the trouble you're having by being a specific as possible, since there are many different ways to add a member to your contact/friends list. Where are you trying to do this (in what section of the site)? What are you seeing and what did you used to be able to see/do?

If you can go through the specific steps you use to get there, that would be super helpful. It's very difficult to troubleshoot technical issues without as much detail as possible. Thanks.