The face of stock is not split when executing subdivide segment in the latest versions.
However, when doing the same thing with NX 8.5, the face was split.
Solution Please check ON "Create Tiled Faces for Stock Bodies" in the customer defaults to get the same result of NX8.5.
Customer Defaults->Routing->General->Stock (Tab) ->Create Tiled Faces for Stock Bodies
Hardware/Software Configuration Platform: INTL64
OS Version: 764