Transition effects not working with weather-forecast card

[fuchsg]

I'm not sure if this a generic incompatibility with this card, but I'm trying here. I have the following state-switch definition between an auto-entities card and the weather-forecast card:

type: custom:state-switch
entity: input_boolean.10_sekunden_timer
states:
  'on':
    type: weather-forecast
    entity: weather.forecast_home
    name: Wetter Wolfsgraben
    forecast_type: daily
    show_current: true
    show_forecast: true
    card_mod:
      style: |
        div.name {
          line-height: 1.2
        }
  'off':
    type: custom:auto-entities
    card:
      type: entities
      title: Raumklima
      card_mod:
        style: |
          :host {
            font-size: 1.5em;
          }
    filter:
      include:
        - entity_id: sensor.iot_shellyplusht_*_temperature
          options:
            type: custom:template-entity-row
            state: >-
              {% set nbsp = '　　' %}
              {% set humidity = states("this.entity_id".split("_temperature")[0]+"_humidity") %}
              {% set temperature = states("this.entity_id") %}
              {{ humidity + '% ' + nbsp + temperature + '°C' }}
            color: |-
              {% if states("this.entity_id") | float > 20 %}
                red
              {% else %}
                blue
              {% endif %}
      exclude: []

This works well and as expected. However, when I add transition: slide-left or any other transition effect, the weather-forecast card is empty when it slides over. The auto-entities card is fine, though.