The Foliage tab is disabled while simulating in the viewport, however if the user has the Foliage Select mode enable when they simulate and click on a foliage instance in the viewport it will crash.
Same behavior is seen in 4.18 and is easier to occur as the Foliage tab is not disabled while simulating.
Result: Crash
UE4Editor_Foliage!AInstancedFoliageActor::GetSelectionLocation() instancedfoliage.cpp:2384 UE4Editor_FoliageEdit!FEdModeFoliage::GetSelectionLocation() foliageedmode.cpp:1752 UE4Editor_FoliageEdit!FEdModeFoliage::UpdateWidgetLocationToInstanceSelection() foliageedmode.cpp:1780 UE4Editor_FoliageEdit!FEdModeFoliage::HandleClick() foliageedmode.cpp:3471 UE4Editor_UnrealEd!FEditorModeTools::HandleClick() editormodemanager.cpp:664 UE4Editor_UnrealEd!FLevelEditorViewportClient::ProcessClick() leveleditorviewport.cpp:1946 UE4Editor_UnrealEd!FEditorViewportClient::ProcessClickInViewport() editorviewportclient.cpp:2790 UE4Editor_UnrealEd!FEditorViewportClient::InputKey() editorviewportclient.cpp:2552 UE4Editor_UnrealEd!FLevelEditorViewportClient::InputKey() leveleditorviewport.cpp:2585 UE4Editor_Engine!FSceneViewport::OnMouseButtonUp() sceneviewport.cpp:579 UE4Editor_Slate!SViewport::OnMouseButtonUp() sviewport.cpp:202 UE4Editor_Slate!<lambda_1002768c627006711ef2f351a87ec0e7>::operator() slateapplication.cpp:5435 UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_1002768c627006711ef2f351a87ec0e7> >() slateapplication.cpp:266 UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() slateapplication.cpp:5424 UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() slateapplication.cpp:5922 UE4Editor_Slate!FSlateApplication::OnMouseUp() slateapplication.cpp:5902 UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1726 UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() windowsapplication.cpp:2172 UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() windowsapplication.cpp:889 UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() windowsapplication.cpp:726 user32!<Unknown> user32!<Unknown> UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() windowsplatformapplicationmisc.cpp:129 UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:3244 UE4Editor!GuardedMain() launch.cpp:166 UE4Editor!GuardedMainWrapper() launchwindows.cpp:134 UE4Editor!WinMain() launchwindows.cpp:210 UE4Editor!__scrt_common_main_seh() exe_common.inl:253 kernel32!<Unknown> ntdll!<Unknown>
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-54421 in the post.
| 1 |
| Component | UE - LD & Modeling - Terrain - Landscape |
|---|---|
| Affects Versions | 4.18.3, 4.19 |
| Target Fix | 4.19 |
| Created | Jan 24, 2018 |
|---|---|
| Resolved | Jan 26, 2018 |
| Updated | Apr 27, 2018 |
| 4443 - projectgheist |