Seems like I have some issues with the Patent Drawing and Pen display styles. Every now and then my view ports with do some weird things, sometimes the display style will randomly drop detail in the model, in essence its stuff like lines, or shape and so on, and just creates just a white void. This I know happens when the display style is used to show “blocks” but this is made geometry and not imported stuff.
It also seems to be a random thing too. Some of the same models will come through just fine and then in another view port the same model is fine.