gnome-session will not start notification-daemon

[John Frankish <john frankish outlook com>]

Using gnome-session-3.16.0 and notification-daemon-3.16.1

Gnome-session does not start notification-daemon - does anybody have an idea
why?

Gnome-session --debug:
...
gnome-session2[26203]: DEBUG(+): GsmManager: read
/etc/xdg/autostart/notification-daemon-autostart.desktop
gnome-session2[26203]: DEBUG(+): GsmStore: Adding object id
/org/gnome/SessionManager/App8 to store
...
gnome-session2[26203]: DEBUG(+): app /org/gnome/SessionManager/App8 is not
for the current desktop
gnome-session2[26203]: DEBUG(+): GsmManager:    ID:
/org/gnome/SessionManager/App8  app-id:notification-daemon-autostart.desktop
is-disabled:1   is-conditionally-disabled:0