michael-jeulinl/Slicer — comment on commit 121204cc308c869854f7334e83f97e0f165a40d1
File: Libs/MRMLDisplayableManager/vtkMRMLThreeDReformatDisplayableManager.cxx line 402
By finetjul:

a bit strange... it would be better to do:
if (!planeWidget)
{
planeWidget = this->Internal->SliceNodes.find(sliceNode)->second;
}