They are active groups. Example: New Streets. Yet, it asks if I want to leave group. ?? Don't think they would give me the boot :-) Home ยป GroupsNew StreetsFor communications between people building a new street and collaboration while collecting raw materialsDiscussionsYou do not have permission to view this group's discussions.
That group is a bit buggy, Mystbecky. If you were under the group limit I would suggest leaving New Streets and rejoining it - that would allow you to see the discussions again. I also experienced that :\ Since you're over the limit, it's a bit more difficult because it's not possible to invite a player into the group atm.
Are there other groups that this is happening in too?
Groups in general need a lot of bugs worked out of them, and this group has a bug opened on it. I don't expect them to be fixed for awhile yet, so yes, try leaving that group and rejoining.