Cannot get Transitions to Work

Configuration
1

I have two scenes, one bright white and one soft white, with different values for color temp and brightness. I also have an automation trigger at sunset to change scenes from bright white to soft white. However my transitions do not work. It’s always a sudden change from one scene to the next. I’ve also tried scripts instead of scenes with no luck. Any ideas what I’m doing wrong?

scenes.yaml

- name: Bright White
  entities:
    light.living_room_lights:
      state: 'on'
      transition: 2
      brightness: 120
      color_temp: 330

- name: Soft White
  entities:
    light.living_room_lights:
      state: 'on'
      transition: 2
      brightness: 75
      color_temp: 440

automation.yaml

- alias: Soft White at Sunset when already on
  id: '1594855779470'
  trigger:
  - platform: sun
    event: sunset
    offset: -00:10:00
  condition:
  - condition: state
    entity_id: light.living_room_lights
    state: 'on'
  action:
  - service: scene.turn_on
    data:
      entity_id: scene.soft_white
      transition: 2.5
2

Remove the transition setting from your scenes. Scenes only support states and transition is not a state.

To use transitions with scenes you specify the transition when calling the scene service. See https://www.home-assistant.io/integrations/scene/#using-scene-transitions