Motion Sensor Temperature Monitoring Goes to Sleep

I have a 2016 model SmartThings Motion Sensor in the hallway of our weekend home. It turns the hall lights on when it detects motion. But i also have it set to text me if the temperature drops below a certain level.

However, if we have not been there for a week or so, the temperature monitoring “freezes” or locks up and doesn’t respond to changes in temperature anymore. But as soon as we walk into the hall it detects motion and starts working again.

How can I keep the device actively monitoring temperature when we are not there for several days?

Sounds like a firmware defect, try contacting ST support.