Plus sign for national identifiers under People to Cover in Ben Admin not displaying

Summary:

We had this set to True on the Add National Identifier Section to show Add Icon Section. When I log in as the administrator and there is already dependent listed without an SSN the + sign is not displaying. I have National identifiers showing Visible in Configure Fields and Regions and if someone does have an SSN it is allowing me to view and edit with the pencil but the + sign isn't displaying. I posted in Benefits and they suggested posting in HR as it might be security?

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable): 25C