CAB Workbench service portal page ("cab_workbench" page ID) doesn't render the right set of change request fields defined in form layout.
Jakarta, Kingston and London.
If the fields are configured via Form Layout, on any other form view but "cab_workbench" then the portal page won't render the desired set of fields.
The "cab_workbench" portal page honors the fields configured in this view.
If you have customized CAB workbench widget, please do refer the below documentation (as applicable):
CAB Workbench does not render correct change request form details: https://support.servicenow.com/kb_view.do?sysparm_article=KB0712969