Group all attribute doesn't work

I’ve got with all: true attribute, I wish to have a group with presence status ex. when all people are out of home to have notifications about move inside home.

But now if just one person left a home a whole group is not_home. I wish to have this status when all people are away.

  name: Family Presence
  all: true
    - person.X
    - person.Y

Set all: false instead of all: true.

It doesn’t work.

Person X is at home, Persony Y is away. A whole group is away.