It is due to SlicerMorph overriding some default settings - see Volume display - Interpolate turned off by default in newest stable?.
@muratmaga Please change SlicerMorph so that it does not silently override application settings (disabling interpolation is particularly undesirable, but other settings may be unexpected, too), If you want to expose additional application settings to users then you can do that by a few short Python code snippets, for example:
- Create new settings panel: https://github.com/Slicer/Slicer/blob/master/Modules/Scripted/DICOM/DICOM.py#L295-L350
- Add it to application settings: https://github.com/Slicer/Slicer/blob/master/Modules/Scripted/DICOM/DICOM.py#L77-L82