Device automation - list empty

Hey guys - ever since device automations were released, I’ve only ever been able to get them to work 2 or 3 times. Most of the time, when I try and create one- I get no devices in the list. With the Automations panel in devices in 0.105.x, I tried through there - but I always get “There are no automations available for this device”. I’ve tried with both lights and switches. Any ideas?