Nothing under hunches - but you got me pointed in the correct direction. It looks like I might have stammered last night when asking Alexa to turn off a light. She responded correctly to the first phrase, but wrongly to the second:
Interestingly though, my "All Lights" group from Hubitat is not exposed to Alexa. I also don't see a group with this name created by/within the Alexa app. At least now I know what happened and where to fiddle around to make a fix. For now, I've created an "All Lights" group in the Alexa app and added no devices to it, so that should dead-end a similar misunderstanding in the future...
In the absence of a specific list, and sometimes even with it, Alexa will go through its entire list of switches and lights when it thinks "all lights" has been invoked.
Once again (puts on tinfoil hat) Alexa will grab ALL your devices if given the chance. Periodically I review my devices in Amazon to make sure only the devices I want exposed are included.. I don't need Amazon knowing all my life patterns..
Had similar action a week ago. Coming home from dinner an alert of motion in the house and HSM triggered. Cleared it through Dashboard but upon coming home found our power had "flicked", turning lights on (which then turned off due to rules) but apparently, (guessing here) a Aoetec multi sensor USB powered, but battery in also, saw the lights all come on and signaled "movement" according to logs. Hub on USB so everything was fine after I killed to alarm.
I had multiple “phantom” Alexa turn everything on events last summer. But it wasn’t really phantom, it was my son who had moved home for a few months while relocating from the West Coast to DC.
In a basement TV room, I have a SmartThings button that turns on a few of the lights in that room with a single press and all of the lights with a double tap. I explained this to him multiple times. One day while driving up to the house I saw all of my outdoor lights turn on. When I got inside everything was on again. After speaking with him almost immediately after the event, he explained that when only some of the lights came on in the TV Room that he said something like “Alexa all lights on” or “Alexa turn everything on”. I explained to him that if he was in a room with an Alexa device all he needed to say was “Alexa, lights on” and all the lights in that room would turn on. That was the last everything on event I had. He then explained how much better his Google Assistant was than my Alexa.
