Confused by Wierdness Printing to PDF?

I am trying to output a PDF of some geometry using a Layout, but I do not understand whats happening and why, hoping someone can explain what is going on here?

There is some geometry in the Rhino scene, just basic polylines - nothing special

I have a Layout view, and am printing in Perspective mode with ‘Shaded’ display mode:

If I ‘ExportAll’ to PDF, I get kind of what I would expect:

If I increase the line-weights, I get super fat lines.

so far, so good. But lets say I have some Grasshopper room-boundaries that I’d like to print as well. I can preview those, and they look fine

But then if I ‘ExportAll’, now I get this:

which . . . I’m honestly at a loss to explain? Can you think of any reason why such a thing might be happening? What am I looking at here? The Grasshopper preview is sometimes, in some parts of the PDF, inheriting the line-weight of the Rhino geometry, but then in other parts of the PDF, it is not?

I have attached the example Rhino and GH for reference. Any ideas on how I could go about fix whatever is happening here? And what is happening here?

example.gh (40.3 KB)
example.3dm (3.1 MB)

thanks!
@ed.p.may

Hi Ed -

I’m not seeing that behavior here:

Please run the Rhino SystemInfo command and copy-paste its output here.
-wim

Thanks for taking a look @wim !

  1. Did you print all the way? Meaning - my ‘preview’ looks like yours:

but then its the final PDF document that has the issue?

  1. SystemInfo output attached for reference.

thanks!
@ed.p.may

SystemInfo.txt (4.9 KB)