In UE4 4.22 Preview 2. Enabling far shadows on the directional light causes the distance field soft shadows to stop working within the range of the far shadow cascades. Enabling tessellation on the landscape material causes a crash if one of the landscape tiles is loaded while material is saved. With tessellation enabled, landscape tiles do not cast or receive any shadows unless the streaming proxy is selected in the editor. Also, any landscape component that is frustum culled no longer casts shadows.