Requested by UDN : https://udn.unrealengine.com/s/case/500QP00000RyWvAYAV/requesting-an-engine-mod-to-access-certain-landscape-texture-patch-properties-in-blueprints-via-getters?fromCase=1
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-231500 in the post.