The earliest recollection of this bug is traced back to PAN-OS 8.1.18 - January 09, 2024. This bug is fixed in PAN-OS versions 9.1.6, 8.1.18. Fixed an issue where URL Filtering logs were misaligned when exported from the firewall due to the presence of a comma in the User-Agent field of the logs. For more information: https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-release-notes/pan-os-8-1-addressed-issues/pan-os-8-1-18-addressed-issues https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-release-notes/pan-os-9-1-addressed-issues/pan-os-9-1-6-addressed-issues