Bug - printing shaded viewports

I have a layout set up.
Some details have line drawings and some have shaded objects.

If I pdf print the whole layout as raster there is no problem (but it turns out rasterized of course).
If I pdf print in vector the pdf print stalls (both adobe pdf and bullzip pdf).
If I pdf print with the shaded details as wireframe there is no problem.

So there seems to be a bug printing shaded details in vector.
Is there a work-around?