After the latest forum release, the online user list shows who's online with delays. When we refresh the page, should show us first as online on the list, but it shows other people and even those who updated minutes before that. (Forum is caching this block)
The userlist is also showing users while under the anonymous mode. They get in, it doesn't show what they're currently doing and when you update it again, they disappear from the user list. It doesn't affect a whole group since some volunteers shows up as some others don't.
The screenshots shows the caching issue and the anonymous issue: