Layout / Detail print width not visible in pdf export

I’ve come across this problem several times recently. If I set a line width in Detail print width it doesn’t print when exported as a pdf, but it does display in Rhino with PrintDisplay.
It has also happened that if I reset my Detail print width to default, the thicknesses don’t update. I have to redo a new layout for the update to really take place. Am I doing something wrong?
Thanks for your help.

Lines.3dm (3.0 MB)

System Info.txt (4.2 KB)

Are you Exporting to PDF, or Printing to PDF?

I’ve just tried both, and neither seems to respond to these thicknesses.

Hi all - I think I’m having the same, or at least a related problem. I posted about it on this thread: Print width not working correctly in Rhino 8

Any help would be gratefully received!