Template Sensor not showed in group! why?

This is my blocl code of configuration.yaml:

  - platform: template
    sensors:
      sun_state:
        friendly_name: "Posizione del sole"
        value_template: >-
          {% if is_state('sun.sun', 'above_horizon') %}
            Alto
          {% else %}
            Tramontato
          {% endif %} 
        icon_template: >-
          {% if is_state('sun.sun', 'above_horizon') %}
            mdi:weather-sunny
          {% else %}
            mdi:weather-night
          {% endif %}          

… this code seem to work in the views, but in the group still remain the standard icon and caption.
How I can chege the icon and caption also in the group?

:thinking:

bump! some can help me? some ideas? it’s a bug?