There is no such report on ISE currently, however this information can be gathered from Context Visibility per endpoint, you will find an attributed for Inactive days.
If you are able to have CLI access, try installing the latest patch, there are few defects on 3.0 unpatched with this error. Otherwise, I would consider this is related to VM compatibility.
Which RHEL version are you using for installation?
There are 2 things you need to take in consideration:
1- Under Alarm settings, select the desired alarm and click on edit, you will find a check box "Send Syslog Message"
2- Create a new remote logging target for your external syslog as UDP sysl...
Hello,
This behavior needs to be reported directly with TAC to address a new defect (if not opened already), this is not a common or expected behavior.