Area interferring with Nabu casa? or

So I have a Hue group of lights called light.living. Also have an area Living.

Normally I say “Ok google turn off living lights”, and it correctly does so, turn off the light.living, and nothing else.
The other day, I forgot the exact phrase, and accidentally said “Ok google turn off living”, after which it turned off all switches in my Living.

I would have understood that, if these switches were added to the Area, and we should officially be able to do so, using an area name, which I am not even sure about.

Having said that, I checked the switches for areas, and they have none in HA. I did add them to a room: in Nabu Casa cloud, but carefully created another name, to purposely prevent what I described happened above:

      switch.audio_auditorium:
        room: Woonkamer

Any thought on how to debug this?
If I click the Area in config/areas, I only see these lights of the light group, and scripts and automations using these entities/lights.

No real clue how to pursue this, please have a look?