michael-jeulinl/Slicer — comment on commit 121204cc308c869854f7334e83f97e0f165a40d1
File: Libs/MRMLDisplayableManager/vtkMRMLThreeDReformatDisplayableManager.cxx line 198
By finetjul:

seems that you want to do
vtkImplicatPlaneWidget2* &planeWidget instead