CAB Workbench - Work Notes (activity filter) not showing on cab work bench view.
The fields like work_notes and comments are not stored like normal fields on a record.
They are stored in a different table.
Usually activity formatter is used to get the values from these fields.
The widget "CAB Workbench - Change Tab" used by cab workbench is missing this implementation. This is a feature request.
This is an expected behaviour.Workaround is to use the edit button and see the notes in the change request form view .