Sensor\template\filter value precision

Configuration
1

Hello,

I’ve created template sensor like this:

    sinotimer_raw_phase_current_total:
        unique_id: sinotimer_raw_phase_current_total
        friendly_name: Phase current total raw
        unit_of_measurement: A
        device_class: current
        availability_template: >-
          {{ not is_state('sensor.sinotimer_raw_data', 'unavailable') }}
        value_template: >-
            {% set t = [states('sensor.sinotimer_raw_phase_current_a'), states('sensor.sinotimer_raw_phase_current_b'), states('sensor.sinotimer_raw_phase_current_c')]
                       | map('float') | list %}
            {{ '{:.3f}'.format(t | sum | round(3)) }}

now if I go to “developers tools → template” and write

     {{ states('sensor.sinotimer_raw_phase_current_total') }}

I see the value is 3 decimals, like 0.000
But if I go to “developers tools → states” and select entity sensor.sinotimer_raw_phase_current_total value is shown only as 0.0
The same if I add entity to cars on Lovelace…
I want to have 3 decimals all the time even if they are zero, eg . 0.000 or 0.010 or 0.100
How to achieve it?

Similar with filter, I can specify precision attribute, but it make only rounding…

2

The frontend is responsible for automatically reducing the value to 0.0 and, to my knowledge, there’s currently no control over that behavior (but it may be offered in a future release).