Unreal Engine Issues and Bug Tracker (UE-138424)

Description

This is not a regression.

Tested in:
//UE5/Main CL18218925 Binary - Crashed
//UE5/Release-5.0 CL16682836 Binary - Crashed
//UE4/Release-4.27 CL Binary - Crashed

Having a level open that contains an Actor with an Actor Sequence Component results in a crash with memory leaks when attempting to create a level.

I was able to get the crash every time with just an Actor with the Sequence, but user are reporting that adding a Transform Track then a Relative Transform section and keying some points increases the likely hood of a crash.

Steps to Reproduce

In any project add a Cube to the scene
In the Cube's details add an Actor Sequence Component
Save the level
Create a new basic level either using File -> Create New Level or pressing Ctrl+N

Expected Results:
A new level is created and loaded in the view port

Actual Results:
The Editor crashes with "World Memory Leaks: 2 leaks objects and packages"

Callstack

LogWindows: Windows GetLastError: The operation completed successfully. (0)
LogWindows: Error: === Critical error: ===
LogWindows: Error: 
LogWindows: Error: Fatal error: [File:D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp] [Line: 2040] 
LogWindows: Error: World Memory Leaks: 2 leaks objects and packages. See The output above.
LogWindows: Error: 
LogWindows: Error: 
LogWindows: Error: 
LogWindows: Error: 
LogWindows: Error: [Callstack] 0x00007ffa2a1cb37d UnrealEditor-UnrealEd.dll!UEditorEngine::CheckForWorldGCLeaks() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:2042]
LogWindows: Error: [Callstack] 0x00007ffa2a1d3e14 UnrealEditor-UnrealEd.dll!UEditorEngine::EditorDestroyWorld() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:2175]
LogWindows: Error: [Callstack] 0x00007ffa2a1ff36d UnrealEditor-UnrealEd.dll!UEditorEngine::Map_Load() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:2571]
LogWindows: Error: [Callstack] 0x00007ffa2a1eeeef UnrealEditor-UnrealEd.dll!UEditorEngine::HandleMapCommand() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:6239]
LogWindows: Error: [Callstack] 0x00007ffa2a1d5800 UnrealEditor-UnrealEd.dll!UEditorEngine::Exec() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:5729]
LogWindows: Error: [Callstack] 0x00007ffa2ab5c4c8 UnrealEditor-UnrealEd.dll!UUnrealEdEngine::Exec() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\UnrealEdSrv.cpp:659]
LogWindows: Error: [Callstack] 0x00007ffa2a56c5a3 UnrealEditor-UnrealEd.dll!FEditorFileUtils::LoadMap() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\FileHelpers.cpp:2752]
LogWindows: Error: [Callstack] 0x00007ffa23e40597 UnrealEditor-LevelEditor.dll!FLevelEditorActionCallbacks::NewLevel() [D:\build\++UE5\Sync\Engine\Source\Editor\LevelEditor\Private\LevelEditorActions.cpp:252]
LogWindows: Error: [Callstack] 0x00007ffa23e1a817 UnrealEditor-LevelEditor.dll!TBaseStaticDelegateInstance<void __cdecl(void),FDefaultDelegateUserPolicy>::ExecuteIfSafe() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:731]
LogWindows: Error: [Callstack] 0x00007ffa4bfb6d34 UnrealEditor-Slate.dll!FUICommandList::ExecuteAction() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Commands\UICommandList.cpp:99]
LogWindows: Error: [Callstack] 0x00007ffa4c09e65a UnrealEditor-Slate.dll!SMenuEntryBlock::OnClicked() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\MultiBox\SMenuEntryBlock.cpp:1121]
LogWindows: Error: [Callstack] 0x00007ffa4c09f6d0 UnrealEditor-Slate.dll!SMenuEntryBlock::OnMenuItemButtonClicked() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\MultiBox\SMenuEntryBlock.cpp:1081]
LogWindows: Error: [Callstack] 0x00007ffa4c081684 UnrealEditor-Slate.dll!TBaseSPMethodDelegateInstance<0,SMenuEntryBlock,1,FReply __cdecl(void),FDefaultDelegateUserPolicy>::Execute() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:290]
LogWindows: Error: [Callstack] 0x00007ffa4c12acb6 UnrealEditor-Slate.dll!SButton::ExecuteOnClick() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Input\SButton.cpp:465]
LogWindows: Error: [Callstack] 0x00007ffa4c155d4d UnrealEditor-Slate.dll!SButton::OnMouseButtonUp() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Input\SButton.cpp:390]
LogWindows: Error: [Callstack] 0x00007ffa4c09f7cc UnrealEditor-Slate.dll!SMenuEntryButton::OnMouseButtonUp() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\MultiBox\SMenuEntryBlock.cpp:415]
LogWindows: Error: [Callstack] 0x00007ffa4bed5984 UnrealEditor-Slate.dll!<lambda_51e270ca99ea7ce852539efd04dd453f>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:4929]
LogWindows: Error: [Callstack] 0x00007ffa4beb7bac UnrealEditor-Slate.dll!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_51e270ca99ea7ce852539efd04dd453f> >() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:398]
LogWindows: Error: [Callstack] 0x00007ffa4bf39a57 UnrealEditor-Slate.dll!FSlateApplication::RoutePointerUpEvent() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:4915]
LogWindows: Error: [Callstack] 0x00007ffa4bf2082c UnrealEditor-Slate.dll!FSlateApplication::ProcessMouseButtonUpEvent() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:5463]
LogWindows: Error: [Callstack] 0x00007ffa4bf12984 UnrealEditor-Slate.dll!FSlateApplication::OnMouseUp() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:5428]
LogWindows: Error: [Callstack] 0x00007ffaa06ecf53 UnrealEditor-ApplicationCore.dll!FWindowsApplication::ProcessDeferredMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:2210]
LogWindows: Error: [Callstack] 0x00007ffaa06da983 UnrealEditor-ApplicationCore.dll!FWindowsApplication::DeferMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:2699]
LogWindows: Error: [Callstack] 0x00007ffaa06ef501 UnrealEditor-ApplicationCore.dll!FWindowsApplication::ProcessMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:1078]
LogWindows: Error: [Callstack] 0x00007ffaa06d55a3 UnrealEditor-ApplicationCore.dll!FWindowsApplication::AppWndProc() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:916]
LogWindows: Error: [Callstack] 0x00007ffad5f763ed USER32.dll!UnknownFunction []
LogWindows: Error: [Callstack] 0x00007ffad5f75de2 USER32.dll!UnknownFunction []
LogWindows: Error: [Callstack] 0x00007ffaa06f0904 UnrealEditor-ApplicationCore.dll!FWindowsPlatformApplicationMisc::PumpMessages() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsPlatformApplicationMisc.cpp:139]
LogWindows: Error: [Callstack] 0x00007ff61a37718a UnrealEditor.exe!FEngineLoop::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5187]
LogWindows: Error: [Callstack] 0x00007ff61a39119c UnrealEditor.exe!GuardedMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:183]
LogWindows: Error: [Callstack] 0x00007ff61a39128a UnrealEditor.exe!GuardedMainWrapper() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:147]
LogWindows: Error: [Callstack] 0x00007ff61a3940dd UnrealEditor.exe!LaunchWindowsStartup() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:283]
LogWindows: Error: [Callstack] 0x00007ff61a3a7a14 UnrealEditor.exe!WinMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:330]
LogWindows: Error: [Callstack] 0x00007ff61a3aa8c6 UnrealEditor.exe!__scrt_common_main_seh() [d:\a01\_work\6\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
LogWindows: Error: [Callstack] 0x00007ffad5267bd4 KERNEL32.DLL!UnknownFunction []
LogWindows: Error: [Callstack] 0x00007ffad63aced1 ntdll.dll!UnknownFunction []

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Fixed

Component	UE - Anim - Sequencer
Affects Versions	4.27, 5.0-early access, 5.0, 5.0.1, 5.1
Target Fix	5.0

Fix Commit	18527328
Main Commit	18527341
Release Commit	18527328

Created	Jan 5, 2022
Resolved	Jan 6, 2022
Updated	Jan 26, 2023

View Jira Issue

UE-138424

Editor crashes when creating a new level while the current level contains an Actor with an Actor Sequence Component

Editor crashes when creating a new level while the current level contains an Actor with an Actor Sequence Component

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