pvpython crash when creating Clip or Slice

In ParaView 5.9 and 5.10 (RC), pvpython and the internal python shell will segfault (and kill ParaView) if the first action taken is either of these:

c = Clip()
s = Slice()

Originally reported in a discourse thread.

The backtrace points to:

VTKExtensions/FiltersGeneral/vtkPVMetaClipDataSet.cxx:210
209	  if (vtkHyperTreeGrid::SafeDownCast(
210	        inputVector[0]->GetInformationObject(0)->Get(vtkDataObject::DATA_OBJECT())))

where inputVector[0]->GetInformationObject(0) is nullptr. There's a similar problem with vtkPVMetaSliceDataSet