The earliest recollection of this bug is traced back to PAN-OS 10.1.5 - July 29, 2024.
This bug is fixed in PAN-OS versions 10.1.5, 9.1.10.
( PA-7000 Series firewalls with LFCs only ) Fixed an issue where the logging rate for the LFC was not displayed in Panorama > Managed Devices > Health .
( PA-7000 Series firewalls with Log Forwarding Cards (LFC) only ) Fixed an issue where the logging rate for the LFC was not displayed in Panorama > Managed Devices > Health .
For more information:
https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-release-notes/pan-os-10-1-5-known-and-addressed-issues/pan-os-10-1-5-addressed-issues
https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-release-notes/pan-os-9-1-addressed-issues/pan-os-9-1-10-addressed-issues