Unreal Engine Issues and Bug Tracker (UE-48925)

Description

If a blueprint structure contains a map variable with Actor Class Reference as the key, populating the map with a custom blueprint (ActorSet) and adding a variable of the structure to any other blueprint (ActorRef ) causes the project to no longer be able to package. Additionally, restarting the project will lead to a crash when opening the Ref blueprint.

Workaround:
Creating the map in ActorRef rather than a standalone struct does not cause the package failure / crash to occur.

Regression:
No - Same Behavior occurs in 4.16.3 (CL 3561208)

Steps to Reproduce

Open UE4 Editor (any project)
Create two blueprints based on actor (ActorSet & ActorRef)
Right click in Content Browser and select Blueprints->Structure (TestStruct)
Open TestStruct and set MemberVar_0 variable type to Actor->Class Reference
Click the circle next to the dropdown arrow and set the variable to a Map (bottom icon)
Set the map value type to String
Under Default Values, press plus to add element to MemberVar_0
Set left hand dropdown to ActorSet
Open ActorRef blueprint and add variable of type TestStruct
Package project

Result:
The project will fail to package with the error provided in first half of callstack field. Additionally, restarting the project and opening ActorRef causes crash with the callstack in the second half of callstack field

Expected:
Editor packaged / opens blueprint using Struct with Actor Map

Callstack

Output Log from Package Attempt

UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: begin: stack for UAT
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: === Critical error: ===
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: 
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\Containers/Array.h] [Line: 596] 
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: Array index out of bounds: 0 from an array of size 0
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: 
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: 
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: KERNELBASE.dll!0x00000000FCE0A06D
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Core.dll!FOutputDeviceWindowsError::Serialize() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:120]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Core.dll!FOutputDevice::Logf__VA() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:70]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Core.dll!FDebug::AssertFailed() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!FLinkerPlaceholderObjectImpl::FindRawPlaceholderContainer() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerplaceholderbase.cpp:161]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!FLinkerPlaceholderBase::AddReferencingPropertyValue() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerplaceholderbase.cpp:364]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!UObjectProperty::SerializeItem() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\propertyobject.cpp:91]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!UMapProperty::SerializeItem() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\propertymap.cpp:313]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!FPropertyTag::SerializeTaggedProperty() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\propertytag.cpp:188]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!UStruct::SerializeTaggedProperties() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:1073]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Engine.dll!UUserDefinedStruct::SerializeTaggedProperties() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\userdefinedstruct.cpp:240]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!UScriptStruct::SerializeItem() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:2002]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!UStructProperty::SerializeItem() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\propertystruct.cpp:119]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!FPropertyTag::SerializeTaggedProperty() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\propertytag.cpp:188]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!UStruct::SerializeTaggedProperties() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:1073]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!UObject::SerializeScriptProperties() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:1282]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!UObject::Serialize() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:1216]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Engine.dll!UEngine::CopyPropertiesForUnrelatedObjects() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\unrealengine.cpp:11834]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-UnrealEd.dll!FBlueprintCompileReinstancer::CopyPropertiesForUnrelatedObjects() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\unrealed\private\kismet2\kismetreinstanceutilities.cpp:2156]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Kismet.dll!FBlueprintCompilationManagerImpl::ReinstanceBatch() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\kismet\private\blueprintcompilationmanager.cpp:1136]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Kismet.dll!FBlueprintCompilationManagerImpl::FlushCompilationQueueImpl() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\kismet\private\blueprintcompilationmanager.cpp:801]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Kismet.dll!FBlueprintCompilationManager::FlushCompilationQueue() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\kismet\private\blueprintcompilationmanager.cpp:1926]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Engine.dll!UBlueprintGeneratedClass::ConditionalRecompileClass() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\blueprintgeneratedclass.cpp:260]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!FScopedClassDependencyGather::~FScopedClassDependencyGather() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:376]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExport() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4010]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!FLinkerLoad::IndexToObject() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4227]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExport() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3697]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExportAndPreload() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2743]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!FLinkerLoad::LoadAllObjects() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2890]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!LoadPackageInternal() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1303]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!LoadPackage() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1409]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-UnrealEd.dll!UCookOnTheFlyServer::LoadPackageForCooking() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\unrealed\private\cookontheflyserver.cpp:2023]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-UnrealEd.dll!UCookOnTheFlyServer::TickCookOnTheSide() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\unrealed\private\cookontheflyserver.cpp:1632]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-UnrealEd.dll!UCookCommandlet::CookByTheBook() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\unrealed\private\commandlets\cookcommandlet.cpp:906]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-UnrealEd.dll!UCookCommandlet::Main() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\unrealed\private\commandlets\cookcommandlet.cpp:582]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Cmd.exe!FEngineLoop::PreInit() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2134]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Cmd.exe!GuardedMain() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\launch.cpp:127]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Cmd.exe!GuardedMainWrapper() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Cmd.exe!WinMain() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Cmd.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: kernel32.dll!0x0000000076DC59CD
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: ntdll.dll!0x0000000076EFA561
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: ntdll.dll!0x0000000076EFA561
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: 
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: end: stack for UAT

Callstack when reopening ActorRef

LoginId:7156c35640f86204e61b8383f45dee17
EpicAccountId:c807849e05a0413d99e379f2802cae9c

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\Containers/Array.h] [Line: 596] Array index out of bounds: 0 from an array of size 0

UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349]
UE4Editor_CoreUObject!FLinkerPlaceholderObjectImpl::FindRawPlaceholderContainer() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerplaceholderbase.cpp:161]
UE4Editor_CoreUObject!FLinkerPlaceholderBase::AddReferencingPropertyValue() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerplaceholderbase.cpp:364]
UE4Editor_CoreUObject!UObjectProperty::SerializeItem() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\propertyobject.cpp:91]
UE4Editor_CoreUObject!UMapProperty::SerializeItem() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\propertymap.cpp:313]
UE4Editor_CoreUObject!FPropertyTag::SerializeTaggedProperty() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\propertytag.cpp:188]
UE4Editor_CoreUObject!UStruct::SerializeTaggedProperties() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:1073]
UE4Editor_Engine!UUserDefinedStruct::SerializeTaggedProperties() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\userdefinedstruct.cpp:240]
UE4Editor_CoreUObject!UScriptStruct::SerializeItem() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:2002]
UE4Editor_CoreUObject!UStructProperty::SerializeItem() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\propertystruct.cpp:119]
UE4Editor_CoreUObject!FPropertyTag::SerializeTaggedProperty() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\propertytag.cpp:188]
UE4Editor_CoreUObject!UStruct::SerializeTaggedProperties() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:1073]
UE4Editor_CoreUObject!UObject::SerializeScriptProperties() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:1282]
UE4Editor_CoreUObject!UObject::Serialize() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:1216]
UE4Editor_Engine!UEngine::CopyPropertiesForUnrelatedObjects() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\unrealengine.cpp:11834]
UE4Editor_UnrealEd!FBlueprintCompileReinstancer::CopyPropertiesForUnrelatedObjects() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\unrealed\private\kismet2\kismetreinstanceutilities.cpp:2156]
UE4Editor_Kismet!FBlueprintCompilationManagerImpl::ReinstanceBatch() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\kismet\private\blueprintcompilationmanager.cpp:1136]
UE4Editor_Kismet!FBlueprintCompilationManagerImpl::FlushCompilationQueueImpl() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\kismet\private\blueprintcompilationmanager.cpp:801]
UE4Editor_Kismet!FBlueprintCompilationManager::FlushCompilationQueue() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\kismet\private\blueprintcompilationmanager.cpp:1926]
UE4Editor_Engine!UBlueprintGeneratedClass::ConditionalRecompileClass() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\blueprintgeneratedclass.cpp:260]
UE4Editor_CoreUObject!FScopedClassDependencyGather::~FScopedClassDependencyGather() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:376]
UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4010]
UE4Editor_CoreUObject!FLinkerLoad::IndexToObject() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4227]
UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3697]
UE4Editor_CoreUObject!FLinkerLoad::CreateExportAndPreload() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2743]
UE4Editor_CoreUObject!FLinkerLoad::LoadAllObjects() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2890]
UE4Editor_CoreUObject!LoadPackageInternal() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1303]
UE4Editor_CoreUObject!LoadPackage() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1409]
UE4Editor_CoreUObject!ResolveName() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:781]
UE4Editor_CoreUObject!StaticLoadObjectInternal() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:869]
UE4Editor_CoreUObject!StaticLoadObject() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:936]
UE4Editor_ContentBrowser!FAssetData::GetAsset() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\assetregistry\public\assetdata.h:276]
UE4Editor_ContentBrowser!SContentBrowser::OnAssetsActivated() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\contentbrowser\private\scontentbrowser.cpp:1922]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,TTypeWrapper<void> __cdecl(TArray<FAssetData,FDefaultAllocator> const & __ptr64,enum EAssetTypeActivationMethod::Type)>::Execute() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,void __cdecl(TArray<FAssetData,FDefaultAllocator> const & __ptr64,enum EAssetTypeActivationMethod::Type)>::ExecuteIfSafe() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:434]
UE4Editor_ContentBrowser!SAssetView::OnListMouseButtonDoubleClick() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\contentbrowser\private\sassetview.cpp:3864]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,TTypeWrapper<void> __cdecl(TSharedPtr<FAssetViewItem,0>)>::Execute() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,void __cdecl(TSharedPtr<FAssetViewItem,0>)>::ExecuteIfSafe() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:434]
UE4Editor_ContentBrowser!TBaseDelegate<void,TSharedPtr<FAssetViewItem,0> >::ExecuteIfBound() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:624]
UE4Editor_ContentBrowser!SListView<TSharedPtr<FAssetViewItem,0> >::Private_OnItemDoubleClicked() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\public\widgets\views\slistview.h:805]
UE4Editor_ContentBrowser!STableRow<TSharedPtr<FAssetViewItem,0> >::OnMouseButtonDoubleClick() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\public\widgets\views\stablerow.h:288]
UE4Editor_Slate!<lambda_eeb33fd1b480e3cad58a1531d90d2e14>::operator()() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5635]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FPointerEvent,<lambda_eeb33fd1b480e3cad58a1531d90d2e14> >() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:232]
UE4Editor_Slate!FSlateApplication::RoutePointerDoubleClickEvent() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5633]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonDoubleClickEvent() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5620]
UE4Editor_Slate!FSlateApplication::OnMouseDoubleClick() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5596]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:1722]
UE4Editor_Core!FWindowsApplication::DeferMessage() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:2161]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:881]
UE4Editor_Core!FWindowsApplication::AppWndProc() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:721]
user32
user32
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:1009]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3151]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
kernel32
ntdll

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Fixed

Component	UE - Gameplay - Blueprint
Affects Versions	4.17.1
Target Fix	4.18

Fix Commit	3618409
Main Commit	3628687
Release Commit	3643070

Created	Aug 28, 2017
Resolved	Aug 30, 2017
Updated	Apr 27, 2018

UE-48925

Editor cannot handle blueprint structure using an Actor Map variable

Editor cannot handle blueprint structure using an Actor Map variable

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