Multiple systemmonitor/disk_free shows only the first one in lovelace overview

Hi, I’m on a 0.94.1 fresh install on a beefy I7 Arch Linux with 1TB internal and 4TB external HD, the latter is used to store motioneye videos.

I configured the systemmonitor platform this way:

  - platform: systemmonitor
    resources:
      - type: disk_free
        arg: /
      - type: disk_free
        arg: /mnt/usb1/
      - type: memory_free
      - type: processor_use

Lovelace standard UI shows all the monitored system resources, except the external disk /mnt/usb1/

Did I miss something?
Thank you,
Piero

I confirm this issue after upgrading to 0.96.2
What I missed?
Thanks,
Piero

Still reproducible with version 0.106.2