Unreal Engine Issues and Bug Tracker (UE-171825)

Description

Reproduced 3/3 times. Unclear whether this is a regression as filter GUI is new in 5.1 for Outliner.

Steps to Reproduce

Create a new basic level & save it.
Create 2 Blueprint actors. Give Actor1 a child actor component and assign it as Actor2.
Compile & save actors.
Add Actor1 to level. Save level
Navigate to Tools>World Partition>Convert Level
Convert In Place
Actor1 should now be unloaded
In the Outliner, enable Static Mesh Actor Filter
In World Partition panel, highlight area where actor is and load actor

Actual Result: Editor Crashes. Only occurs when filter is enabled.

Expected Result: No Crash.

Callstack

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000010

UnrealEditor_SceneOutliner!FActorBrowsingMode::CompareItemWithClassName() [D:\build\++UE5\Sync\Engine\Source\Editor\SceneOutliner\Private\ActorBrowsingMode.cpp:2260]
UnrealEditor_SceneOutliner!TBaseSPMethodDelegateInstance<1,SSceneOutliner const ,1,bool __cdecl(ISceneOutlinerTreeItem const &,TSet<FTopLevelAssetPath,DefaultKeyFuncs<FTopLevelAssetPath,0>,FDefaultSetAllocator> const &),FDefaultDelegateUserPolicy>::Execute() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:295]
UnrealEditor_SceneOutliner!FAssetFilter<ISceneOutlinerTreeItem const &>::PassesFilter() [D:\build\++UE5\Sync\Engine\Source\Editor\EditorWidgets\Public\Filters\AssetFilter.h:122]
UnrealEditor_SceneOutliner!TFilterCollection<ISceneOutlinerTreeItem const &>::PassesAllFilters() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Misc\FilterCollection.h:113]
UnrealEditor_SceneOutliner!SSceneOutliner::CreateItemFor<FActorTreeItem,AActor *>() [D:\build\++UE5\Sync\Engine\Source\Editor\SceneOutliner\Public\SSceneOutliner.h:526]
UnrealEditor_SceneOutliner!FActorHierarchy::OnLevelActorAdded() [D:\build\++UE5\Sync\Engine\Source\Editor\SceneOutliner\Private\ActorHierarchy.cpp:594]
UnrealEditor_SceneOutliner!FActorHierarchy::OnLoadedActorAdded() [D:\build\++UE5\Sync\Engine\Source\Editor\SceneOutliner\Private\ActorHierarchy.cpp:636]
UnrealEditor_SceneOutliner!TBaseRawMethodDelegateInstance<0,FActorHierarchy,void __cdecl(AActor &),FDefaultDelegateUserPolicy>::ExecuteIfSafe() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:476]
UnrealEditor_Engine!ULevel::AddLoadedActors() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Level.cpp:951]
UnrealEditor_Engine!FWorldPartitionLoadingContext::FDeferred::~FDeferred() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionHandle.cpp:147]
UnrealEditor_Engine!IWorldPartitionActorLoaderInterface::ILoaderAdapter::RefreshLoadedState() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionActorLoaderInterface.cpp:224]
UnrealEditor_Engine!IWorldPartitionActorLoaderInterface::ILoaderAdapter::Load() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionActorLoaderInterface.cpp:46]
UnrealEditor_WorldPartitionEditor!SWorldPartitionEditorGrid2D::CreateRegionFromSelection() [D:\build\++UE5\Sync\Engine\Source\Editor\WorldPartitionEditor\Private\WorldPartition\SWorldPartitionEditorGrid2D.cpp:479]
UnrealEditor_WorldPartitionEditor!TBaseSPMethodDelegateInstance<0,SWorldPartitionEditorGrid2D,1,void __cdecl(void),FDefaultDelegateUserPolicy>::ExecuteIfSafe() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:312]
UnrealEditor_Slate!FUICommandList::ExecuteAction() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Commands\UICommandList.cpp:111]
UnrealEditor_Slate!SMenuEntryBlock::OnClicked() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\MultiBox\SMenuEntryBlock.cpp:1148]
UnrealEditor_Slate!SMenuEntryBlock::OnMenuItemButtonClicked() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\MultiBox\SMenuEntryBlock.cpp:1108]
UnrealEditor_Slate!TBaseSPMethodDelegateInstance<0,SMenuEntryBlock,1,FReply __cdecl(void),FDefaultDelegateUserPolicy>::Execute() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:295]
UnrealEditor_Slate!SButton::ExecuteOnClick() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Input\SButton.cpp:465]
UnrealEditor_Slate!SButton::OnMouseButtonUp() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Input\SButton.cpp:390]
UnrealEditor_Slate!SMenuEntryButton::OnMouseButtonUp() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\MultiBox\SMenuEntryBlock.cpp:434]
UnrealEditor_Slate!<lambda_51e270ca99ea7ce852539efd04dd453f>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:5046]
UnrealEditor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_51e270ca99ea7ce852539efd04dd453f> >() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:412]
UnrealEditor_Slate!FSlateApplication::RoutePointerUpEvent() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:5032]
UnrealEditor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:5601]
UnrealEditor_Slate!FSlateApplication::OnMouseUp() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:5566]
UnrealEditor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:2219]
UnrealEditor_ApplicationCore!FWindowsApplication::DeferMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:2726]
UnrealEditor_ApplicationCore!FWindowsApplication::ProcessMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:1895]
UnrealEditor_ApplicationCore!FWindowsApplication::AppWndProc() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:925]
user32
user32
UnrealEditor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsPlatformApplicationMisc.cpp:142]
UnrealEditor!FEngineLoop::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5291]
UnrealEditor!GuardedMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:202]
UnrealEditor!GuardedMainWrapper() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:107]
UnrealEditor!LaunchWindowsStartup() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:244]
UnrealEditor!WinMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:282]
UnrealEditor!__scrt_common_main_seh() [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll

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Fixed

Component	UE - Editor
Affects Versions	5.1
Target Fix	5.1.1

Fix Commit	23407104
Release Commit	23407104

Created	Dec 5, 2022
Resolved	Dec 13, 2022
Updated	Dec 13, 2022

View Jira Issue

UE-171825

Editor crashes when actors using child actor component are loaded while Static mesh actor filter is enabled in the outliner

Editor crashes when actors using child actor component are loaded while Static mesh actor filter is enabled in the outliner

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