Flux not taking effect on Ikea bulbs but works fine on Hue lights..?

I’m trying to use Flux component and it seem to work great on my philips hue multicolor G10 bulbs but seem to have zero effect on Ikea Traadfri white lights.

Anyone seen similar ?

My config is as simple as possible:

switch:
  - platform: flux
    lights:
      - group.kitchen_lights
      - group.dinner_table_lights
      - group.hallway_lights
      - group.kitchen_table_lights
      - light.dinner_table_wall_light

Also, is it expected the Flux component is always off on restart ? I have to explicitly turn it on everytime.