Sculpting landscape with foliage painted crashes editor

sculpting landscape with foliage painted crashes editor

Frequency 3/3

Crashreporter [Link Removed]

Logs [Link Removed]

1. Open Editor (any project)
2. Create new landscape
3. Open Foliage Mode
4. Add a mesh to foliage tool
5. Change brush size to 8000
6. LMB over landscape to add foliage into viewport
7. Switch to sculpt mode
8. Attempt to sculpt landscape around/under foliage

Results

Editor crashes

Expected

Landscape sculpts, foliage moves with landscape

MachineId:4E82586D46B558EA69EF0EAA821297B1
EpicAccountId:2e342bbd0e92480fa71bf4505b6a81c3

Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 785]
Array index out of bounds: -671 from an array of size 425

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\misc\outputdevice.cpp:430]
UE4Editor_Engine!UHierarchicalInstancedStaticMeshComponent::UpdateInstanceTransform() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\hierarchicalinstancedstaticmesh.cpp:1925]
UE4Editor_Landscape!ULandscapeHeightfieldCollisionComponent::SnapFoliageInstances() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\landscape\private\landscapecollision.cpp:1190]
UE4Editor_LandscapeEditor!FHeightmapAccessor<1>::SetData() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\landscapeeditor\private\landscapeedmodetools.h:666]
UE4Editor_LandscapeEditor!FLandscapeToolStrokeSculpt::Apply() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\landscapeeditor\private\landscapeedmodepainttools.cpp:482]
UE4Editor_LandscapeEditor!FLandscapeToolBase<FLandscapeToolStrokeSculpt>::Tick() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\landscapeeditor\private\landscapeedmodetools.h:1341]
UE4Editor_LandscapeEditor!FEdModeLandscape::Tick() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\landscapeeditor\private\landscapeedmode.cpp:581]
UE4Editor_UnrealEd!FEditorModeTools::Tick() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\editormodemanager.cpp:607]
UE4Editor_UnrealEd!FLevelEditorViewportClient::Tick() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\leveleditorviewport.cpp:2030]
UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\editorengine.cpp:1414]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\unrealedengine.cpp:370]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\launchengineloop.cpp:2643]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll

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