Nested Group State not set correctly

Configuration
1

I’ve got 2 groups with sensors in them grouped in one big group (nested grouping) the state of the group is unfortunatly not set correctly, any idea what’s going wrong?

Groups 
default_view:
  view: yes
  icon: mdi:home
  entities:
    - group.temperatures
kantoor_temperatures:
  icon: mdi:thermometer
  name: Kantoor temperatures
  entities:
    - sensor.kantoor_temperature
    - sensor.kantoor_humidity

woonkamer_temperatures:
  icon: mdi:thermometer
  name: Woonkamer Temperatures
  entities:
    - sensor.woonkamer_temperature
    - sensor.woonkamer_humidity

temperatures:
  icon: mdi:thermometer 
  name: Temperatures
  entities:
    - group.kantoor_temperatures
    - group.woonkamer_temperatures
Sensors 
sensor:
  - platform: dht
    name: Kantoor
    sensor: DHT11
    pin: 17
    monitored_conditions:
      - temperature
      - humidity
  - platform: mqtt
    state_topic: "REDACTED"
    name: "woonkamer temperature"
    unit_of_measurement: '°C'
  - platform: mqtt
    state_topic: "REDACTED"
    name: "woonkamer humidity"
    unit_of_measurement: '%'

image

2

Still haven’t found a way to fix this, any input/help?