Proximity: strange reporting

I have proximity defined as such:

proximity:
  home:
    devices:
      - person.kolia
      - person.anne
    tolerance: 50
    unit_of_measurement: m
  nicolas_home:
    devices:
      - person.kolia
    tolerance: 50
    unit_of_measurement: m

I’m currently sitting at home. I wondering why both proximity.home and proximity.nicolas_home don’t report the exact same data

As a matter of fact proximity.nicolas_home never reports arrived and never reports state = 0
Thank you