Trouble with AIS_InteractiveContex Load Method

Hello,

I transform my Project from OCCT 6.7.0 to OCCT 7.1.0.

CAD_Models can be load and viewed sucessful im my Viewer.

Using the Load Method of AIS_InteractiveContex  i get a crash.

Handle(AIS_InteractiveContext) const & myOperationContext;

class Workpiece
{
    public:
    Workpiece(Handle(AIS_Shape) const & shape);

    private:
    Handle(AIS_Shape) myShape;

    Handle(AIS_Shape) const & GetShape() const
    {
        ASSERT(!myShape.IsNull());
        ASSERT(!myShape->Shape().IsNull());
                       
        return myShape;
    }
}

// .. Loading sucessful workpiece(shape) via IGS-Interface :
// .. result = CImportExport::ReadIGES(file,shape);

Handle(AIS_Shape) s = new AIS_Shape(shape); //ok
ASSERT(!s.IsNull()); // ok

Workpiece * const model = new Workpiece(s); // ok
ASSERT(model);

// ... model is displayed in Viewer
myAISContext->Display( s, false ); // ok

........
myOperationContext->Load(model->GetShape()); // Crash