Unreal Engine Issues and Bug Tracker (UE-44706)

Description

When multiple instances of a Blueprint in a level are selected, any component added to that Blueprint's parent class in code will appear in the Details panel with the words "Multiple Values" and a Reset to Default button visible. Clicking on the Reset to Default button results in a crash.

REGRESSION:
No. A crash also occurred in 4.14.3 with the same repro, but the callstack was slightly different.

Steps to Reproduce

Create a new Basic Code project.
Add a new Actor class to the project.
Add a Static Mesh Component to the new class.
Create a Blueprint of the new class.
Place 2-3 instances of the Blueprint in the level in different locations.
Select all instances of the Blueprint in the level.
In the Details panel, click the Reset to Default button for the Static Mesh Component.

RESULT:
The Editor crashes with the following error: Assertion failed: !GetOuter()->IsTemplate()

EXPECTED:
The static mesh component in each instance of the Blueprint in the level moves to the level origin.

Callstack

Assertion failed: !GetOuter()->IsTemplate() [File:D:\Main-Builds\Stream\Engine\Source\Runtime\Engine\Private\Components\ActorComponent.cpp] [Line: 693] 
'NewBlueprint_C /Game/NewBlueprint.Default__NewBlueprint_C' (No_StaticMesh)


KERNELBASE.dll!0x00000000FCC0A06D
UE4Editor-Core.dll!FOutputDeviceWindowsError::Serialize() [d:\main-builds\stream\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:120]
UE4Editor-Core.dll!FOutputDevice::Logf__VA() [d:\main-builds\stream\engine\source\runtime\core\private\misc\outputdevice.cpp:70]
UE4Editor-Core.dll!FDebug::AssertFailed() [d:\main-builds\stream\engine\source\runtime\core\private\misc\assertionmacros.cpp:349]
UE4Editor-Engine.dll!UActorComponent::OnRegister() [d:\main-builds\stream\engine\source\runtime\engine\private\components\actorcomponent.cpp:693]
UE4Editor-Engine.dll!USceneComponent::OnRegister() [d:\main-builds\stream\engine\source\runtime\engine\private\components\scenecomponent.cpp:587]
UE4Editor-Engine.dll!UPrimitiveComponent::OnRegister() [d:\main-builds\stream\engine\source\runtime\engine\private\components\primitivecomponent.cpp:467]
UE4Editor-Engine.dll!UActorComponent::ExecuteRegisterEvents() [d:\main-builds\stream\engine\source\runtime\engine\private\components\actorcomponent.cpp:1223]
UE4Editor-Engine.dll!UActorComponent::RegisterComponentWithWorld() [d:\main-builds\stream\engine\source\runtime\engine\private\components\actorcomponent.cpp:961]
UE4Editor-Engine.dll!AActor::IncrementalRegisterComponents() [d:\main-builds\stream\engine\source\runtime\engine\private\actor.cpp:4097]
UE4Editor-Engine.dll!AActor::RegisterAllComponents() [d:\main-builds\stream\engine\source\runtime\engine\private\actor.cpp:3996]
UE4Editor-Engine.dll!AActor::PostEditChangeProperty() [d:\main-builds\stream\engine\source\runtime\engine\private\actoreditor.cpp:130]
UE4Editor-CoreUObject.dll!UObject::PostEditChangeChainProperty() [d:\main-builds\stream\engine\source\runtime\coreuobject\private\uobject\obj.cpp:435]
UE4Editor-PropertyEditor.dll!FPropertyNode::NotifyPostChange() [d:\main-builds\stream\engine\source\editor\propertyeditor\private\propertynode.cpp:2354]
UE4Editor-PropertyEditor.dll!FPropertyNode::ResetToDefault() [d:\main-builds\stream\engine\source\editor\propertyeditor\private\propertynode.cpp:2028]
UE4Editor-PropertyEditor.dll!TBaseSPMethodDelegateInstance<0,FPropertyEditor,0,TTypeWrapper<void> __cdecl(void)>::Execute() [d:\main-builds\stream\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327]
UE4Editor-PropertyEditor.dll!TBaseSPMethodDelegateInstance<0,FPropertyEditor,0,void __cdecl(void)>::ExecuteIfSafe() [d:\main-builds\stream\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:433]
UE4Editor-PropertyEditor.dll!SDetailsViewBase::Tick() [d:\main-builds\stream\engine\source\editor\propertyeditor\private\sdetailsviewbase.cpp:1095]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:773]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor-Slate.dll!SSplitter::OnPaint() [d:\main-builds\stream\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:168]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-Slate.dll!SBox::OnPaint() [d:\main-builds\stream\engine\source\runtime\slate\private\widgets\layout\sbox.cpp:237]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor-Slate.dll!SBorder::OnPaint() [d:\main-builds\stream\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:86]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SOverlay::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor-Slate.dll!SSplitter::OnPaint() [d:\main-builds\stream\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:168]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor-Slate.dll!SSplitter::OnPaint() [d:\main-builds\stream\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:168]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SOverlay::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor-Slate.dll!SBorder::OnPaint() [d:\main-builds\stream\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:86]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SOverlay::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor-Slate.dll!SSplitter::OnPaint() [d:\main-builds\stream\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:168]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SOverlay::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SOverlay::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor-SlateCore.dll!SWindow::OnPaint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swindow.cpp:1838]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\main-builds\stream\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor-Slate.dll!FSlateApplication::DrawWindowAndChildren() [d:\main-builds\stream\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1192]
UE4Editor-Slate.dll!FSlateApplication::PrivateDrawWindows() [d:\main-builds\stream\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1432]
UE4Editor-Slate.dll!FSlateApplication::DrawWindows() [d:\main-builds\stream\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1149]
UE4Editor-Slate.dll!FSlateApplication::TickApplication() [d:\main-builds\stream\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1726]
UE4Editor-Slate.dll!FSlateApplication::Tick() [d:\main-builds\stream\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1548]
UE4Editor.exe!FEngineLoop::Tick() [d:\main-builds\stream\engine\source\runtime\launch\private\launchengineloop.cpp:3185]
UE4Editor.exe!GuardedMain() [d:\main-builds\stream\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor.exe!GuardedMainWrapper() [d:\main-builds\stream\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor.exe!WinMain() [d:\main-builds\stream\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32.dll!0x0000000076C059CD
ntdll.dll!0x0000000076D3A561
ntdll.dll!0x0000000076D3A561

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Fixed

Component	UE - Gameplay - Blueprint
Affects Versions	4.15.2, 4.17
Target Fix	4.17

Fix Commit	3521185
Main Commit	3555226
Release Commit	3521185

Created	May 4, 2017
Resolved	Jul 5, 2017
Updated	Jul 26, 2017

UE-44706

Crash occurs in the Editor when multiple instances of the same Blueprint are selected in the level and the Reset to Default button next to a component of the Blueprint is clicked in the Details panel

Crash occurs in the Editor when multiple instances of the same Blueprint are selected in the level and the Reset to Default button next to a component of the Blueprint is clicked in the Details panel

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