When you say "don't receive profile pictures" any more, do you mean on the connected accounts page? If so, this is unlikely to be something that we are likely to change as this mostly relates to historical data and it's quite possibly something we can't update. (This is probably related to your Facebook application being older and the user IDs stored not being application-specific.)
Or are you referring to new registrations not pulling avatars from Facebook? I believe that should still work and actually if it does, that would probably mean that the new stored user IDs are application-specific and should load on the connected accounts page as well (based on FB documentation).
