Moving Landscape causes Crash with Landscape Grass Output in Landscape Material

Editor crashes when utilizing the Landscape Grass Output node within a Material, and then attempting to move the landscape with the material applied.

I narrowed this down to being directly related to the use of the Landscape Grass Output node, as when it is removed from the material, the editor does not crash when transforming the landscape.

Regression?
Yes, using the same material set up and moving the landscape does not cause a crash in 4.11.2.

Link to Crash Reporter
[Link Removed]

1. Open the attached project.
2. Select Landscape Actor.
3. Use Transform gizmo to move landscape.

Outcome Editor Crashes

Expected Landscape transforms correctly and no crash occurs.

UE4Editor_Engine!AActor::InvalidateLightingCacheDetailed() actor.cpp:4129
UE4Editor_UnrealEd!UEditorEngine::ApplyDeltaToActor() editorengine.cpp:2361
UE4Editor_UnrealEd!FLevelEditorViewportClient::ApplyDeltaToActor() leveleditorviewport.cpp:3528
UE4Editor_UnrealEd!FLevelEditorViewportClient::ApplyDeltaToActors() leveleditorviewport.cpp:3208
UE4Editor_UnrealEd!FLevelEditorViewportClient::InputWidgetDelta() leveleditorviewport.cpp:2324
UE4Editor_UnrealEd!FEditorViewportClient::UpdateMouseDelta() editorviewportclient.cpp:1952
UE4Editor_UnrealEd!FEditorViewportClient::Tick() editorviewportclient.cpp:1075
UE4Editor_UnrealEd!FLevelEditorViewportClient::Tick() leveleditorviewport.cpp:2024
UE4Editor_UnrealEd!UEditorEngine::Tick() editorengine.cpp:1409
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() unrealedengine.cpp:368
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2775
UE4Editor!GuardedMain() launch.cpp:148
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126
UE4Editor!WinMain() launchwindows.cpp:200
UE4Editor!__scrt_common_main_seh() exe_common.inl:264
kernel32!<Unknown>
ntdll!<Unknown>