Hi,
Online members list in the site index page works fine, but in threads and sub forums it doesn't show the members' IDs and number of guests viewing a thread or a sub forum.
I logged in with my other account and tested it. Also tried visiting threads as a guest, but it just shows myself in viewing people.
Got the same results with both beta 3 and beta 4.
(https://i.snag.gy/o70Xq3.jpg)