MQTT Climate Sensor Range Limits

It appears that an MQTT based climate sensor cant set temps below 7 (45 F) or 35 (95 F) at least via the UI. I have the following config:

climate: 
 - platform: mqtt
    initial: 32
    min_temp: 0
    name: "Fin Temps"
    temperature_command_topic: "myhome/wine/setfinmintemp"
    temperature_state_topic: "ha/wine/finMinTemp"
    current_temperature_topic: "ha/wine/Fin Temp"
    mode_state_topic: "ha/wine/Defrosting" 
    modes:
      - "Defrosting"
      - "Normal"
    swing_modes:
    fan_modes:

Its working fine within that range but the UI won’t let me go above or below those limits. I did find those limits referenced here:

https://github.com/home-assistant/home-assistant/blob/dev/homeassistant/components/climate/init.py

Can someone help confirm this restriction before I move on to another approach?

Thanks

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