From the Action menu, in cataloging workflow, at the moment if you select the "Add new field above" link, the system will add a new empty tag to the top of record, where all the variable tags are displayed. It's not the correct behavior.
This should be the workflow: the user selects (using a relating check box) the tag (for example 100) from which the application will add the new tag. So, if the user have selected "Add new field above", the application will add the new empty tag above tag 100.
Otherwise, if the user selects "Add new field below", the application will add the new empty tag under tag 100.