Shading view problame

There are a couple of things you might try. If this only happens when you are zoomed "away" from the model as it looks like you are, there is a config option skip_small_surfaces they may be turned on (option set to yes).

Option LODS_enabled also controls the quality of surfaces but I think it only applies while spinning.

The configuration options are located under FILE - OPTIONS and then in MODEL DISPLAY tab or the configuration editor tab if you simply want to search for option by name.

Steve

Is anyone else having trouble envisioning the original feature definition (extrude)?

Welcome to the forum, Vishal!

Can you post images of the feature definition? It almost looks like you achieved a Tesseract.