Comment 16 for bug 1657845

It seems that unity8 is not registered to dbus in the snap version. While loged in the deb version I got this
gdbus introspect --session --dest=com.canonical.Unity8 --object-path /com/canonical/Autopilot/Introspectionnode /com/canonical/Autopilot/Introspection {
  interface com.canonical.Autopilot.Introspection {
    methods:
      GetState(in s piece,
               out a(sv) state);
      GetVersion(out s version);
    signals:
    properties:
  };

Within the snap version of u8, I got this:
Error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name com.canonical.Unity8 was not provided by any .service files

Listed all the names registered to the session bus and there's no unity8.