Bug in mqtt light

Configuration
1

Have a light set as the following (it’s a mysensors mqtt dimmer). I believe it was working fine before but now when i change the slider for brigtness i have HA send two values at the same time - the payload_on and brightess_scale.
I’m not sure i want to separate the switch and brightness topics on arduino side. And it was working before.

mys-in/71/1/1/0/3 32
mys-in/71/1/1/0/3 100

  - platform: mqtt
    name: kitchen_tv
    command_topic: "mys-in/71/1/1/0/3"
    brightness_command_topic: "mys-in/71/1/1/0/3"
    payload_on: 100
    payload_off: 0
    brightness_scale: 100
2

Seems to be the same issue.

https://github.com/home-assistant/home-assistant/issues/7810

3

Yes exactly. Yo have a rare talent of finding the requests on github. It was working on ver 0.33 so i guess there were some pull requests merged changing the behaviour.

I manged to get an mqtt_template config working as a workaround. But it is a workaround…

  - platform: mqtt_template
    name: kitchen_tv
    command_topic: "mys-in/71/1/1/0/3"
    state_topic: "mys-out/71/1/1/0/3"
    state_template: "{%- if value| int > 0 -%} on {%- else -%} off {%- endif -%}"
    brightness_template: '{ value / 100 * 255 }' # required so light has brightness option
    command_off_template: '0'
    command_on_template: >
      {%- if brightness is defined -%} 
      {{ (brightness / 255 * 100) | int }}
      {% else %} 
      100
      {%- endif -%}