Drag & Drop Material on 3D Model Preview does not update model nodes tree-widget

[beo6]

When i drag & Drop a Material onto a 3D Model, the node list is not showing the material in the tree-widget.

I need to Close and Open the Preview again to see the Material in the list.

Before Drag & Drop:

 

After Drag & Drop:

 

After saving & re-opening the preview:

[beo6]

Also probably related: if it already has a Materials node, 

And dragging a material onto it, changing any settings on the Material does nothing.

Probably because it is still trying to edit that non-existing material reference.

[Josh]

Got it