Services keep sending email, when host is up, but in Downtime state

Icinga 2
8

You can directly apply downtimes to Service objects, too. Even if you use host’s custom variables to assign the rule.
see the docs: https://icinga.com/docs/icinga2/latest/doc/08-advanced-topics/#recurring-downtimes

apply ScheduledDowntime "my-fancy-downtime" to Service {
  author = "icingaadmin"
  comment = "Scheduled downtime for backup"

  ranges = {
    monday = "02:00-03:00"
    tuesday = "02:00-03:00"
    wednesday = "02:00-03:00"
    thursday = "02:00-03:00"
    friday = "02:00-03:00"
    saturday = "02:00-03:00"
    sunday = "02:00-03:00"
  }

  assign where "team" in host.groups
}

I have a parallel thread open right now. On at least one host, Icinga2 still sends notification, even if the services are in a downtime. On another one the notifications are not sent. See PROBLEM notification sent during recurring downtime