Widget okcs/facet is not behaving properly

Summary

Widget okcs/facet displays product code instead if product labels

Content

Hi,

We have configured 2 level of service products in system.

standard facet widget is used on results page. but its displaying unexpected results

Please find attached the screenshots from CP

Version

18A

Code Snippet

<rn:widget path="okcs/Facet" top_facet_list="CMS-PRODUCT, Product| CMS-CATEGORY_REF, Category" />