Users can't request membership to private groups they've been invited to
See https://buddypress.trac.wordpress.org/ticket/4495 for more explanation.
Problem originally reported at #2083
#2 Updated by Boone Gorges over 9 years ago
- Status changed from New to Resolved
Fixed in BuddyPress at https://buddypress.trac.wordpress.org/changeset/6277
Added to the Commons in https://github.com/castiron/cac/commit/c6f7210f66cc960ee22e207d7556c1539b081ae5