Siri on HomePod controls wrong lights and switches
About a month ago, despite resetting HomeKit twice, Siri on my HomePod defaults the lights to the Dining Room regardless of the room I place it in. So commands like, "Hey Siri, turn on the lights" or "Hey Siri, turn off the lights" don't turn on and off the lights in the actual room the HomePod is in -- it always defaults to the Dining Room light.
Example: in the Living Room, I say, "hey Siri, turn on the lights," and she gives feedback of "OK, the lights are on," and turns on the Dining Room light. I double-check the Home app and the HomePod is showing up in the Living Room. I ask the HomePod what room it is in and it gives no response. If I say, "Hey Siri, turn off the Living Room lights," she turns them off but gives no response as if it's the room she's in.
This is incredibly frustrating, because natural commands like turning the lights on and off are no longer available. Resetting HomeKit and re-setting up the entire house did not work. The HomePod still only will control the Dining Room light. Same thing if I move the HomePod to a different room of the house (bedroom) in the Home app -- still only the Dining Room light. And if I take the Dining Room light out of HomeKit -- she will still say "OK, I turned on the lights" but not turn on any lights.
Why can I not give natural commands anymore to Siri on HomePod?
, then Home Settings 
> Software Update.