Shelly Addon Automation Bug?

Hi all,

I added last week a shelly 1 plus with the addon and an DS18B20 temp sensor.
The temperature is working fine, but I struggle with the automation?

alias: Aquarium Heizer
description: ""
triggers:
  - trigger: time_pattern
    seconds: /10
conditions: []
actions:
  - choose:
      - conditions:
          - type: is_temperature
            condition: device
            device_id: 5f9241af2c817017ca6f43b87f3e493f
            entity_id: deb5252d5b9f428447dbdaa9618c62aa
            domain: sensor
            below: 24
        sequence:
          - type: turn_on
            device_id: 41d486221789999100e6af4fbdd9f2b1
            entity_id: 291de87d4168b351e5b41a12413eb310
            domain: switch
mode: single

I can trigger the plug for the heater in the automation - that works.

But start an action because the temp changed - no chance…

Any suggestions?