Shadows in ARKit in 4.23

Is anyone else having problems creating shadows under objects in Augmented Reality using ARKit in Unreal 4.23? Similar to the question here Can't use ARKitCameraMaterial as ground material to receive dynamic shadow in AR - UE4 AnswerHub and only 13 prople so far have voted to fix it Unreal Engine Issues and Bug Tracker (UE-64750)

I’ve noticed the ARKitCameraMaterial - but it won’t compile as there are missing nodes:
Error: [SM5] (Node ComponentMask) Missing ComponentMask input

I’ve tried modulated shadows but with no results. Any ideas? (apart from reverting back to 4.20- which probably won’t work)