[CLIENT] Facebook Button in "Find Friends" Not Working

When I select "Find Friends" and then choose to Add Friends by Social Network, the grey Facebook button is permanently greyed out.

There are no pop-ups or error messages when I do. I can click the greyed-out button but no actions occur when I do so.

I have tried multiple times during different logins to add friends through Facebook and I have not been able to successfully do so.

I posted this on the Help & Support Board here! and it was recommended I post this on the bug forum.

Thank you!