Same issue here. Driving me crazy; I’m going to have to turn this presence detection component off even though it does assist in the accuracy of my ‘real’ known devices I’m tracking. Hass 0.30.2 on Raspbian Jessie Full
Same issue occurring for netgear tracking. track_new_devices is set to no, also tried false, and all discovered devices show up in “known_devices” with “track: true”. That poisons my “group.all_devices” group, which is used to determine home/away status.