Hey I have the problem that the chat group is not displayed for some players in the chat, although they are in the group and all have other permissions. This is the case with almost all groups and only individual players not all. What can be the reason? All plugins are up to date.

so figured out the problem i found this in another thread do exactly this 

I'll see about making a pull request, but I changed line 838 to the following and it's working for me now:

 var groups = _instance._chatGroups.Where(g => oxideGroups.Any(name => g.GroupName.ToLower() == name.ToLower())).ToList();

Thanks mate =)