Onesync & Server Side State Awareness not working

I am using “onesync_enabled 1” in my server.cfg as I need onesync to be able to use Mumble Voip. But I am having problems where im not getting “server side state awareness” like onesync is supposed to do. For example when I pull up my scoreboard it only shows players local to me within a couple hundred metres and once they go outside of that I can no longer see them on the scoreboard. But if I go into vMenu and open the Online Players section I can see everyone that is in the server. But if I was to select one of those players from vMenu and attempt to toggle GPS it will just set the GPS to me and if I spectate someone it will teleport me before spectating, it is also very buggy when I try to teleport or summon a player also.

Does anyone know how I can resolve this issue?