Unreal Engine Issues

UE-53102

Unloading level during PIE leads to editor crash

Unloading level during PIE leads to editor crash

UDN
Description

Unloading level during PIE seems to lead to an editor crash. Most easily reproducible by enabling malloc stomp.

Steps to Reproduce
  1. Enable malloc stomp by adding #define USE_MALLOC_STOMP 1 to the top of MallocStomp.h and recompiling the editor
  2. Add the contents of the content folder in the attached zip to the QAGame project [Link Removed]
  3. Launch QA Game and open BodyCustomization\NewMap1
  4. Play in Selected viewport
  5. Press Shift+F1 to unfocus mouse cursor from the PIE window and select "Cube" in the World Outliner
  6. View the Collision > Collision preset settings for the Cube in the details panel
  7. Click the PIE viewport to return input focus to the game
  8. Press the U key which triggers an unload of the sub-level that contains the cube
  9. If crash doesn't happen, stop PIE and repeat steps 4 through 9. Usually happens in 1 or 2 tries.

 

The developer that reported this bug also provided these alternate repro steps, I have not yet tested:

  1. Enable malloc stomp by adding #define USE_MALLOC_STOMP 1 to the top of MallocStomp.h and recompiling the editor
  2. Add the contents of the content folder in the attached zip to the QAGame project [Link Removed] (different contents than the attachment in the first set of repro steps)
  3. Launch QA Game and open BodyCustomization\NewMap1
  4. Play in Selected viewport
  5. Press Shift+F1 to unfocus mouse cursor from the PIE window and select "Cube" and "Cube2" in the World Outliner
  6. View the Collision > Collision preset settings for the Cube in the details panel
  7. Click the PIE viewport to return input focus to the game
  8. Press the U key which triggers an unload of the sub-level that contains the cube

 

Callstack

Callstack can differ, here are two similar but different callstacks:

LoginId:ef649e274a1c49e7a5bd1cbfab31a724
EpicAccountId:c687981c4d1f4b3499c0bb1908069a2a

Access violation - code c0000005 (first/second chance not available)

UE4Editor_PropertyEditor!FPropertyEditor::IsEditConditionMet() [d:\p4\release-4.17\engine\source\editor\propertyeditor\private\presentation\propertyeditor\propertyeditor.cpp:626]
UE4Editor_PropertyEditor!SEditConditionWidget::OnGetEditConditionCheckState() [d:\p4\release-4.17\engine\source\editor\propertyeditor\private\propertyeditorhelpers.cpp:373]
UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<1,SEditConditionWidget,0,enum ECheckBoxState __cdecl(void)>::Execute() [d:\p4\release-4.17\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327]
UE4Editor_Slate!TAttribute<enum ECheckBoxState>::Get() [d:\p4\release-4.17\engine\source\runtime\core\public\misc\attribute.h:137]
UE4Editor_Slate!SCheckBox::OnGetCheckImage() [d:\p4\release-4.17\engine\source\runtime\slate\private\widgets\input\scheckbox.cpp:244]
UE4Editor_Slate!TBaseSPMethodDelegateInstance<1,SCheckBox,0,FSlateBrush const * __ptr64 __cdecl(void)>::Execute() [d:\p4\release-4.17\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327]
UE4Editor_Slate!TAttribute<FSlateBrush const * __ptr64>::Get() [d:\p4\release-4.17\engine\source\runtime\core\public\misc\attribute.h:137]
UE4Editor_Slate!SImage::ComputeDesiredSize() [d:\p4\release-4.17\engine\source\runtime\slate\private\widgets\images\simage.cpp:45]
UE4Editor_SlateCore!SWidget::CacheDesiredSize() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:510]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\p4\release-4.17\engine\source\runtime\slatecore\private\widgets\swidget.cpp:493]
UE4Editor_Slate!PrepassWindowAndChildren() [d:\p4\release-4.17\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1341]
UE4Editor_Slate!FSlateApplication::DrawPrepass() [d:\p4\release-4.17\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1389]
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [d:\p4\release-4.17\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1431]
UE4Editor_Slate!FSlateApplication::DrawWindows() [d:\p4\release-4.17\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1188]
UE4Editor_Slate!FSlateApplication::TickApplication() [d:\p4\release-4.17\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1773]
UE4Editor_Slate!FSlateApplication::Tick() [d:\p4\release-4.17\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1591]
UE4Editor!FEngineLoop::Tick() [d:\p4\release-4.17\engine\source\runtime\launch\private\launchengineloop.cpp:3278]
UE4Editor!GuardedMain() [d:\p4\release-4.17\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\p4\release-4.17\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\p4\release-4.17\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

>	UE4Editor-CoreUObject.dll!FWeakObjectPtr::Get() Line 81	C++
 	UE4Editor-DetailCustomizations.dll!FBodyInstanceCustomization::GetDefaultCollisionProvider(const FBodyInstance * BI) Line 44	C++
 	UE4Editor-DetailCustomizations.dll!FBodyInstanceCustomization::GetCollisionProfileComboBoxContent() Line 1035	C++
 	UE4Editor-DetailCustomizations.dll!TMemberFunctionCaller<FBodyInstanceCustomization,FText (__cdecl FBodyInstanceCustomization::*)(void)const __ptr64>::operator()<>() Line 165	C++
 	UE4Editor-DetailCustomizations.dll!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<FBodyInstanceCustomization,FText (__cdecl FBodyInstanceCustomization::*)(void)const __ptr64> >(TMemberFunctionCaller<FBodyInstanceCustomization,FText (__cdecl FBodyInstanceCustomization::*)(void)const > && Func) Line 497	C++
 	UE4Editor-DetailCustomizations.dll!TBaseSPMethodDelegateInstance<1,FBodyInstanceCustomization,0,FText __cdecl(void)>::Execute() Line 327	C++
 	UE4Editor-Slate.dll!TBaseDelegate<FText>::Execute() Line 537	C++
 	UE4Editor-Slate.dll!TAttribute<FText>::Get() Line 137	C++
 	UE4Editor-Slate.dll!FTextBlockLayout::ComputeDesiredSize(const FTextBlockLayout::FWidgetArgs & InWidgetArgs, const float InScale, const FTextBlockStyle & InTextStyle) Line 48	C++
 	UE4Editor-Slate.dll!STextBlock::ComputeDesiredSize(float LayoutScaleMultiplier) Line 186	C++
 	UE4Editor-SlateCore.dll!SWidget::CacheDesiredSize(float LayoutScaleMultiplier) Line 519	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-SlateCore.dll!SWidget::SlatePrepass(float LayoutScaleMultiplier) Line 502	C++
 	UE4Editor-Slate.dll!PrepassWindowAndChildren(TSharedRef<SWindow,0> WindowToPrepass) Line 1343	C++
 	UE4Editor-Slate.dll!FSlateApplication::DrawPrepass(TSharedPtr<SWindow,0> DrawOnlyThisWindow) Line 1391	C++
 	UE4Editor-Slate.dll!FSlateApplication::PrivateDrawWindows(TSharedPtr<SWindow,0> DrawOnlyThisWindow) Line 1433	C++
 	UE4Editor-Slate.dll!FSlateApplication::DrawWindows() Line 1190	C++
 	UE4Editor-Slate.dll!FSlateApplication::TickApplication(ESlateTickType TickType, float DeltaTime) Line 1777	C++
 	UE4Editor-Slate.dll!FSlateApplication::Tick(ESlateTickType TickType) Line 1595	C++
 	UE4Editor.exe!FEngineLoop::Tick() Line 3378	C++
 	UE4Editor.exe!GuardedMain(const wchar_t * CmdLine, HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, int nCmdShow) Line 166	C++
 	UE4Editor.exe!WinMain(HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, char * __formal, int nCmdShow) Line 199	C++
 	UE4Editor.exe!__scrt_common_main_seh() Line 253	C++
 	kernel32.dll!00007ffa94988364()	Unknown
 	ntdll.dll!00007ffa96ab7091()	Unknown

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Won't Fix
ComponentTools
Affects Versions4.17.2, 4.18.2
CreatedDec 6, 2017
ResolvedAug 18, 2021
UpdatedAug 18, 2021
View Jira Issue