Group of lights and switch has no brightness/color control

I have in HA group of two yeelight bulbs. The power supply to these bulbs is switched on/off via the Z-Wave switch. I added this switch to the group to control the bulbs with a single entity. It works but now I don’t have ability to control the brightness, color and color temperature for bulbs. Any solution for that?

Config of the group:

group:
  bulbs salon:
    name: Kolor żarówek salon
    icon: mdi:lightbulb
    entities:
      - light.yeelight_color_bulb_salon_1
      - light.yeelight_color_bulb_salon_2
      - switch.switch_salon_switch_13_0_2

Group without switch

Group with switch