DirectShape Faces not print

[ModPlus]

I'm create DirectShape by Room solid. Like this:

var fillPatternElement = new FilteredElementCollector(doc)
    .OfClass(typeof(FillPatternElement))
    .OfType<FillPatternElement>()
    .FirstOrDefault(e => e.GetFillPattern().IsSolidFill);

var random = new Random();
var array = new byte[3];
var idCategoryForDirectShape = new ElementId(BuiltInCategory.OST_GenericModel);
using (var tr = new Transaction(doc, "Create room shapes"))
{
    tr.Start();
    foreach (var spatialElement in spatialElements)
    {
        try
        {
            var directShape = DirectShape.CreateElement(doc, idCategoryForDirectShape);
            GeometryElement closedShell = spatialElement.ClosedShell;

            if (directShape.IsValidShape(closedShell.ToList()))
            {
                if (spatialElement.Transform != null)
                    closedShell = closedShell.GetTransformed(spatialElement.Transform);
                directShape.SetShape(closedShell.ToList());
                random.NextBytes(array);
                var color = new Color(array[0], array[1], array[2]);

                SetColor(_uiApplication.ActiveUIDocument, directShape, fillPatternElement, color);
            }
            else
            {
                // message to user
            }
        }
        catch (Exception exception)
        {
            // exception processing
        }
    }

    tr.Commit();
}
...
    private void SetColor(UIDocument doc, DirectShape directShape, FillPatternElement fillPatternElement, Color color)
    {
        var overrideGraphicSettings = new OverrideGraphicSettings();
        overrideGraphicSettings.SetProjectionLineColor(color);
#if R2017 || R2018
        overrideGraphicSettings.SetProjectionFillColor(color);
        overrideGraphicSettings.SetCutFillColor(color);
        overrideGraphicSettings.SetCutFillPatternId(fillPatternElement.Id);
        overrideGraphicSettings.SetProjectionFillPatternId(fillPatternElement.Id);
#else
        overrideGraphicSettings.SetCutBackgroundPatternColor(color);
        overrideGraphicSettings.SetCutBackgroundPatternId(fillPatternElement.Id);
        overrideGraphicSettings.SetCutBackgroundPatternVisible(true);
        overrideGraphicSettings.SetCutForegroundPatternColor(color);
        overrideGraphicSettings.SetCutForegroundPatternId(fillPatternElement.Id);
        overrideGraphicSettings.SetCutForegroundPatternVisible(true);
        overrideGraphicSettings.SetCutLineColor(color);
        overrideGraphicSettings.SetSurfaceBackgroundPatternColor(color);
        overrideGraphicSettings.SetSurfaceBackgroundPatternId(fillPatternElement.Id);
        overrideGraphicSettings.SetSurfaceBackgroundPatternVisible(true);
        overrideGraphicSettings.SetSurfaceForegroundPatternColor(color);
        overrideGraphicSettings.SetSurfaceForegroundPatternId(fillPatternElement.Id);
        overrideGraphicSettings.SetSurfaceForegroundPatternVisible(true);

#endif
        overrideGraphicSettings.SetSurfaceTransparency(50);
        doc.ActiveGraphicalView.SetElementOverrides(directShape.Id, overrideGraphicSettings);
    }

It's all being created normally:

But when trying to print or export to PDF it's as if the DirectShape created has no Faces:

Why is that? What can I do with it?

[jeremy_tammik]

Maybe a print related issue, maybe affected by the transparency? Do you observe any difference between UI and API behaviour? If not, then that is maybe just the way it is.

[ModPlus]

I tried creating a DirectShape without changing the graphics and then changing the graphics through the UI - the effect is the same. I checked in Revit 2020 and 2024. I get the impression that this is a limitation of Revit itself, but it's strange that no one has had a similar issue so far (I haven't found one)

[bimbaas]

I know this is an older post, but... Same issue here with wireframe output when printing, with the same purpose (3D Room volumes). Even using Revit's native pdf export. anyone found a solution yet?