Posted here as apparently it's a feature request, not a bug.
I've noticed that web links in chatrooms and private chats don't autolink unless they are prefixed with http://. So for example, http://www.bbc.co.uk creates a clickable URL but www.bbc.co.uk does not. As many people typically type URLs by just starting with www. it would be good if Arrowchat recognised these as URLs and made them clickable.