Community Tutorial: How to Use Landscape Physical Materials to Control PCG

Control PCG with landscape physical materials in Unreal Engine.

https://dev.epicgames.com/community/learning/tutorials/EPoW/unreal-engine-how-to-use-landscape-physical-materials-to-control-pcg

Great video, however, MANY people seem to be having issues getting 5.5 and 5.6 to have their PCG get surface data to recognize the physical material. Is there any update regarding this for 5.6?