A Hue MotionAware zone covering the whole home could stop all binary sensors and switches for that bridge from loading in Home Assistant. The integration expected each zone to belong to a room or a conventional zone and failed when Hue pointed it at the whole home instead.
Franck Nijhof attaches those whole-home motion sensors and enable switches to the bridge when no room or zone device exists. Existing room-based MotionAware zones keep their association.