@Christopher_Jackson, it depends on the sensor. I have one Ecolink contact sensor (zwave) that every once and a while get’s stuck on open. Resolution has been to just open/close the door/window, or use a device handler that forces a closed state (I do that). A few others have the same issue with the same brand sensor. I believe this to be a device issue because I have a ton of these, and only 1 has a problem.
Regarding motion sensors, if they’re zigbee sensors (SmartSense, Iris, PEQ), I have experienced that some will randomly get stuck in a “motion” state in the app almost always after the hub has been rebooted/restarted. Resolution is only possible by removing that battery, waiting a couple seconds, and putting it back in. Several people in the Community have experienced the same thing with motion sensors. If you’re having this issue, please email ST support so they know.