Shaded Views were not available for Unfolded Section Views.
Solution
Unfolded Section Views are created in NX by Create Folded toggle OFF in the section View dialog for the Point to Point Method.
For Unfolded section views shading option is not available and view cannot be displayed as shaded.
To have Shaded View create view with Folded toggle ON in the Section View dialog.
For Results refer below image for more info.
Folded toggle OFF Folded toggle ON
Hardware/Software Configuration
Platform: INTL64
OS: windows
OS Version: 764sp1
Product: NX
Application: PMI
Version: V12.0.2
Function: SECTION_VIEW
Ref: 002-8015401