Missing temperature on area card

Configuration Frontend
1

I try to add area cards for my rooms to the dashboard. For most rooms, i get infos for both temperature and humidity. But one room display only humidity and I miss the temperature. The code is:

alert_classes:
  - motion
  - moisture
  - window
  - door
  - battery
sensor_classes:
  - temperature
  - humidity
display_type: picture
type: area
area: crazy_room
features_position: bottom
vertical: false

The area has multiple humidity and temperature sensors in area settings.

One temperature sensor looks like that:

state:
  translated: 21,6 °C
  raw: "21.6"
  last_changed: "2026-05-01T08:59:19.620Z"
  last_updated: "2026-05-01T09:10:13.335Z"
attributes:
  state_class: measurement
  model_type: HmIP-STHD
  connection_type: HMIP_RF
  rssi_device: -58
  id: ----
  is_group: false
  unit_of_measurement: °C
  device_class: temperature
  friendly_name: Wandthermostat Crazy Room Temperature

Can someone please tell me, what I’m doing wrong?

Bonus question: how can I add a icon for temperature and humidity in the card?

2

Could it be that the “Use device area” setting of the temperature sensor entity has been disabled?
You can check this via the “Settings” button (cog wheel) of the entity.

This is an example of a temperature sensor entity that has the “Use device area” setting enabled:

SH42_temperature
SH42_temperature586×900 50.2 KB