It does not work the third layer of the landscape. UE 4.14.1
I have created a question
As a result, I decided to try to create a material with the help of Landscape Blend. It turned out that one can not draw The third material. It is possible to use only two. If you use a third, it just does not boot or the engine fly. And so it does not matter what kind of material is the problem? We’ll have to download the old version of the engine.