Light Template Cannot Change Color Mode

[zolakt]

The problem

I want to create a template light, which will combine a relay switch (for on/off) and a led controller (for color temperature, brightness, color and effects).

Functionally everything works fine. However, once I try setting a color, the color_mode attribute gets permanently stuck at hs value. So, even when I change just the ww/cw temperature, the light does change the color correctly, but color_mode is still hs, and not color_temp as it should be. This results in the handle on the color temperature slider not being show, so you don't really know what is the current temperature. You can see it while you set it, but then it disappears after you leave it alone.

The color_mode does change as expected on the original led controller entity, but just not on the light template.

Attributes of the original led controller entity:

Attributes of the template light entity:

Expected behaviour: When set_temperature is called, the color_mode attribute should switch to color_temp.

What version of Home Assistant Core has the issue?

core-2023.12.3

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Template Light

Link to integration documentation on our website

No response

Diagnostics information

No response

Example YAML snippet

Here is my YAML configuration of the whole template light:

office_light_2:
  friendly_name: "Office Light"
  unique_id: "office_light_2"
  value_template: "{{ states('light.office_light') }}"
  availability_template: "{{ states('light.office_light') != 'unavailable' }}"
  level_template: "{{ state_attr('light.office_light_controller', 'brightness') }}"
  min_mireds_template: "{{ state_attr('light.office_light_controller', 'min_mireds') }}"
  max_mireds_template: "{{ state_attr('light.office_light_controller', 'max_mireds') }}"
  temperature_template: "{{ state_attr('light.office_light_controller', 'color_temp') }}"
  hs_template: "{{ state_attr('light.office_light_controller', 'hs_color') }}"
  effect_template: "{{ state_attr('light.office_light_controller', 'effect') }}"
  effect_list_template: "{{ state_attr('light.office_light_controller', 'effect_list') }}"
  turn_on:
    service: light.turn_on
    target:
      entity_id: light.office_light
  turn_off:
    service: light.turn_off
    target:
      entity_id: light.office_light
  set_level:
    service: light.turn_on
    target:
      entity_id: light.office_light_controller
    data:
      brightness: "{{ brightness }}"
  set_temperature:
    service: light.turn_on
    target:
      entity_id: light.office_light_controller
    data:
      color_temp: "{{ color_temp }}"
  set_hs:
    service: light.turn_on
    target:
      entity_id: light.office_light_controller
    data:
      hs_color: "{{ hs }}"
  set_effect:
    service: light.turn_on
    target:
      entity_id: light.office_light_controller
    data:
      effect: "{{ effect }}"

### Anything in the logs that might be useful for us?

_No response_

### Additional information

The issue has been reported here already https://community.home-assistant.io/t/light-template-cannot-change-color-mode/444424