The earliest recollection of this bug is traced back to PAN-OS 10.2.11 - March 11, 2025.
This bug is fixed in PAN-OS versions 10.2.11, 11.1.5, 11.2.5.
"Fixed an issue on the web interface where Match Evidence log details for Monitor > Correlated events did not populate."
For more information:
https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-11-known-and-addressed-issues/pan-os-10-2-11-addressed-issues
https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-5-known-and-addressed-issues/pan-os-11-1-5-addressed-issues
https://docs.paloaltonetworks.com/pan-os/11-2/pan-os-release-notes/pan-os-11-2-5-known-and-addressed-issues/pan-os-11-2-5-addressed-issues