How do you set the field level auditing?

Hi, I have setup field level auditing as per the document How to set Field Level Auditing and I am unable to get detailed field data logs. The SOBJ_AUDIT_DETAIL table remains empty. I am working with 3.4.1. The header entries are created properly however but not the field modification details (old value and new value). I have tried with “Interactive data” as well as “Audit All Data” in the BO settings. The “require explanation” setting is also checked (and that part works). So I get header entries in the Audit tab of the Building form, but no data in the details. I have attached a commented screenshot of my settings… Is this a known Platform defect?