Areas selector showing only one room

Tags: #<Tag:0x00007fc4127804c8> #<Tag:0x00007fc412780360>

I’m trying to create a blueprint with the “area” selector, but it is showing only one room.

As is written in the selectors documentation, it should show ALL available areas, but instead, it seems to be showing only areas with devices on it.

blueprint:
  name: My first blueprint
  domain: automation
  input:
    target_room:
      name: Target Room
      selector:
        area:

Is there anything I can do to show all available areas? Regardless of it being empty or not?

Thanks.