Backup created with automation not listed anymore in GUI (but exist on file system)

Running HAOS on ProxMox.
I have an automation that creates a weekly backup

alias: hassio weekly backup
trigger:
  - platform: time
    at: "10:00:00"
condition:
  - condition: time
    weekday:
      - wed
action:
  - service: notify.persistent_notification
    data:
      message: creating weekly backup! {{ now().strftime('%Y%m%d-%H%M%S') }}
      title: creating weekly backup!!!
  - service: hassio.backup_full
    data_template:
      name: |
        backup_weekly_{{ now().strftime('%Y-%m-%d') }}

But backups, created with the above automation are NOT visible in the GUI

any idea what is going wrong?

grtz
B