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I use solid hatching to suggest shadows on windows, for example, in different shades of gray (less then 50 however).
Boundaries are drawn, in part, in a construction line layer, set to not plot, often using "pick points..."
The hatch's own boundaries are visible in the print however.
Boundaries around hatches are seemingly marked by a darker grey line. As are construction lines running through a hatch. So, construction lines become visible...
Print preview looks fine.
Pdf on screen looks fine, but prints wrong.
Problem occurs in Bricscad v19 and v20.
Old Acad 2004 Lt handles this just fine...
Thanks in advance.