Crash smoothing landscape with foliage

Getting a crash when smoothing out landscape that has foliage painted on it. Seems to happen when I release the mouse.

1. Create a landscape
2. Paint some height to the landscape
3. Switch to Foliage Mode
4. Drag a static mesh into the foliage tool
5. Paint the landscape with foliage around the raised landscape
6. Switch to the Smooth tool
7. Smooth out the raised landscape

Result: Crash

UE4Editor_Engine!UHierarchicalInstancedStaticMeshComponent::UpdateInstanceTransform() hierarchicalinstancedstaticmesh.cpp:1927
UE4Editor_Landscape!ULandscapeHeightfieldCollisionComponent::SnapFoliageInstances() landscapecollision.cpp:1265
UE4Editor_LandscapeEditor!FHeightmapAccessor<1>::SetData() landscapeedmodetools.h:666
UE4Editor_LandscapeEditor!FLandscapeToolStrokeSmooth<FHeightmapToolTarget>::Apply() landscapeedmodepainttools.cpp:607
UE4Editor_LandscapeEditor!FLandscapeToolBase<FLandscapeToolStrokeSmooth<FHeightmapToolTarget> >::Tick() landscapeedmodetools.h:1335
UE4Editor_LandscapeEditor!FEdModeLandscape::Tick() landscapeedmode.cpp:581
UE4Editor_UnrealEd!FEditorModeTools::Tick() editormodemanager.cpp:607
UE4Editor_UnrealEd!FLevelEditorViewportClient::Tick() leveleditorviewport.cpp:2030
UE4Editor_UnrealEd!UEditorEngine::Tick() editorengine.cpp:1414
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() unrealedengine.cpp:370
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2684
UE4Editor!GuardedMain() launch.cpp:142
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126
UE4Editor!WinMain() launchwindows.cpp:200
UE4Editor!__scrt_common_main_seh() exe_common.inl:264
kernel32!<Unknown>
ntdll!<Unknown>