As of Palo Alto Networks App for QRadar version 1.1.0, we have exclusively switched to LEEF log format support. Below are the details on how to install our standard log extension. This will overwrite the custom properties to use standard log format.
If you re uninstall and re-install the Palo Alto Networks App for QRadar please be sure to uninstall this extension as well and re-install if needed.
Note: Uninstalling this extension will not restore LEEF format custom event properties. You will have to reinstall the app to get LEEF format to work.