Resolved! UIA 8.1 issue
I have two different customers who hits same issue.
One user is using PAN-OS 8.1.3 and UIA 8.1.3-10,
another is using PAN-OS 8.0.12 and UIA 8.1.3.-10.
The issue is that UIA detects user info as three types of formats like...
1) domain\user (this is same
...