Default Snapcast group

I’ve got Mopidy and snapcast working with my existing set up, I have 5 tiles for each of the snapclients, however inbetween them are other tiles marked ‘default Snapcast group’ which are idle, I have hidden them in the configuration and in the states but each time I reboot, another 5 or 6 appear.
Any ideas on why they keep appearing and how to get rid of them would be welcome.