VtkUnstructuredGrid() is not displaying in Jupyter notebook

My Unstructured Grid is not displaying any cell geometries in the itk-vtk-viewer window in jupyter notebook. The vtk file however displays perfectly fine using other software, such as ParaView. Python code:

```python
# Load vtkUnstructuredGrid containing hydraulic conductivity data
reader = vtk.vtkUnstructuredGridReader()
reader.SetFileName("HK.vtk")
reader.Update()
grid = reader.GetOutput()
view(geometries=grid)
```

**Environment**
Python 3.7.4,
Jupyter-notebook 6.0.1
itkwidgets 0.32.1

**VTK File**
[HK.zip](https://github.com/InsightSoftwareConsortium/itkwidgets/files/7255485/HK.zip)

Any insight that you have would be helpful. Thank you!