Hello, using Vb3.8.4pl2. Avchat build 1772, Integration build 1577. Chat is open to limited users while testing these newer builds. I've checked permissions in usergroups. Users are able to access private rooms without having to input a password.
Additionally, still have problems with avatars and custom avatars not showing. I thought upgrading to the builds identified would have fixed this problem, but that's not the case. My settings also still shows build 1618, rather than 1772.
UPDATE: The above has been fixed via an old post. So, I still have the permissions issue described in the first paragraph.