Updated the title to reflect that this is a feature request as we’ve never allowed groups to be invited into public topics before. In fact, being able to type a group name in the invite modal of a public topic is actually a bug.
@HAWK Would mentioning a group work for your use case? I’m asking because inviting group in the context of a private message is basically to give the group members access to the private message. The only access control methods we have for public topics are at the category level and I’m not sure if it would be easy to bypass that with invites at the moment.