We have an issue with random pipe showing up as thick line fill. There are no pipe legends set up in the model, and we have no obvious overrides on these pipe segments.
Does anyone have any idea what is causing these pipe segments to show up like this, and how is the PDF output (Bluebeam is used for PDF creation) not matching the sheet view re line weight toggle setting.

Thanks

Line Thickness On.JPG
Line Thickness Off.JPG
PDF Output Line Thickness Off.JPG