The conversion from STP file format to GLB format encountered an error (information loss).

We used the step_to_glb method in the attached code for conversion, mainly utilizing TopoDS_Compound, BRep_Builder, and Prs3d_Drawer for processing.
Please confirm whether this issue is due to a bug in OCC, causing information loss during conversion?

LOG("DEBUG data conversion");
    TopoDS_Compound aCompound;
    BRep_Builder aBuildTool;
    aBuildTool.MakeCompound(aCompound);
    for (TDF_LabelSequence::Iterator aRootIter(aRootLabels); aRootIter.More(); aRootIter.Next())
    {
        const TDF_Label& aRootLabel = aRootIter.Value();
        TopoDS_Shape aRootShape;
        if (XCAFDoc_ShapeTool::GetShape(aRootLabel, aRootShape))
        {
            aBuildTool.Add(aCompound, aRootShape);
        }
    }

    // perform meshing
    Handle(Prs3d_Drawer) aDrawer = new Prs3d_Drawer(); // holds visualization defaults /* 保留可视化默认值 */
    BRepMesh_IncrementalMesh anAlgo;
    anAlgo.ChangeParameters().Deflection = 0.1;
    anAlgo.ChangeParameters().Angle = 20.0 * M_PI / 180.0; // 20 degrees
    anAlgo.ChangeParameters().InParallel = true;
    anAlgo.SetShape(aCompound);
    anAlgo.Perform();
    LOG("DEBUG data conversion finished");