ctml does anyone else have this issue? I'm just trying to determine if it's only me and another extension is causing it or it is a bug with this extension.
The discussion overview loads all users that (I think) are visible on the page + page history. What I mean, if you navigate to all discussions and then into a discussion - all the users that appeared on the all discussions page will appear in the discussion overview even if they have not viewed/participated in the discussion.
If you open the notification dropdown, all the users from there then get added to the overview as well. If you refresh the page while on a discussion, the first time its loaded will be accurate. Once you open notifications or switch pages it will again add any user that appears on the pages.
That brings up a feature request, which would be to keep the discussion overview collapsed if there are too many users. That or have an option of how many users to show, for example the first 50 with a label after saying +400 more.