Group smartplugs not available in UI

1

Hi,

I created a group of smartplugs (Hue) :

group_sfeerverlichting:
  name: Sfeerverlichting
  entities:
    - switch.smart_plug_sfeerverlichting_dressoir_on_off
    - switch.smart_plug_sfeerverlichting_links_on_off
    - switch.smart_plug_sfeerverlichting_rechts_on_off

In the UI I can see my individual smartplugs, but not the group ?

action:
  - service: switch.turn_on
    data: {}
    target:
      entity_id:
        - switch.smart_plug_sfeerverlichting_dressoir_on_off
        - switch.smart_plug_sfeerverlichting_links_on_off
        - switch.smart_plug_sfeerverlichting_rechts_on_off

Is there a problem with the definition of my group (worked before with TP-Link Smart Plugs) ?