I've been using the official Ecobee Integration for SmartSensors. For some reason, the motion of all of my SmartSensors are stuck at either active or inactive - seemingly random. Anyone observe the same issue?
As you work through this, keep in mind that these will never really be as responsive as an equivalent zigbee or Z-Wave motion sensor. Even when using local reporting via HomeKit, they can take longer than a minute to report motion and won't reset for approximately 30 minutes after motion has stopped. Cloud-based integrations like the built in ecobee app will add even more time.