Sensor Left Open Energy Saver Rule not working

Thank you for the information regarding testing. I am not seeing that the issue you linked was resolved.

Is the thermostat working as desired outside of that rule? How far from the panel is the TSAT?

I would suggest updating your firmware to 4.5.0, deleting the rule, then retrying.

Steps on how to update the firmware, including patch notes, can be found below: