nested json coming as null in modify event

Launch a postgres connector for a table containing a field with type, 'jsonb'.

For that table, modify a row in the table. For the field with type 'jsonb', it comes as 'null' in the 'after' field even if no change is made in that field. Ideally, we should be getting correct field value in the 'after' field. This is the bug as we rely on 'after' field values to be the current state of the row