Molecule inside a Multiblock is not rendered
Steps to reproduce:
- load a molecule ('porphyrin.cml' from PV test files)
- apply 'group dataset' filter
Results:
- information panel show expected hierarchy and infos
- empty render view
- following error message
ERROR: In /home/nicolas/ParaView/paraview2/VTK/Common/ExecutionModel/vtkCompositeDataPipeline.cxx, line 164
vtkPVDataRepresentationPipeline (0x55d9ea3fa0b0): Can not execute simple algorithm without output ports