Ecobee binding misreports state if battery dies

I’m using the ecobee binding with an ecobee3 thermostat and remote sensors. I have some rules that determine room occupancy and turn my lights off based on data reported by the remote sensors.

This all works great except when the battery dies or the connection is lost with the remote sensor. When that happens, the Ecobee web site correctly reports sensor’s state as “N/A” but the Openhab Ecobee binding reports “OFF” (even though the real state is unknown). This is problematic because my rules incorrectly interpret this situation as Unoccupied and turn the lights off even though the room may be occupied.

Would it be possible to set the occupancy state reported by OH to NULL or some other value that indicates “unknown”?

Thank you