VTK 7.0 / vtkImageTracerWidget invisible trace
after updating to VTK7, the vtkImageTracerWidget is not working as expected. While tracing (left mouse down and move) the vtkPolyData object is not visible anymore, as it used to be with VTK 5.10.1 or VTK 6.0
However, the points are recorded as expected. The issue is on the display side (ordering / translucency / ?)
I'm attaching an usage example of the vtkImageTracerWidget found on the wiki. vtkImageTracerWidgetTest.cxx