Changing the default values inside of a camera modifier blueprint when referencing it in another blueprint results in a crash.
Tested in 4.21, 4.22, 4.23 and 4.24
SIMPLER REPRO:
ORIGINAL REPRO:
Results: Editor crashes
Expected: Successful compile
Assertion failed: ContainerPtr [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\CoreUObject\Public\UObject/UnrealType.h] [Line: 340] UE4Editor_Core!FWindowsErrorOutputDevice::Serialize() [d:\build\++ue4\sync\engine\source\runtime\core\private\windows\windowserroroutputdevice.cpp:79] UE4Editor_Core!FOutputDevice::LogfImpl() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:71] UE4Editor_Core!AssertFailedImplV() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:101] UE4Editor_Core!FDebug::CheckVerifyFailedImpl() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:445] UE4Editor_PropertyEditor!FEditConditionContext::GetBoolValue() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\editconditioncontext.cpp:108] UE4Editor_PropertyEditor!FEditConditionParser::Evaluate() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\editconditionparser.cpp:647] UE4Editor_PropertyEditor!FPropertyEditor::IsEditConditionMet() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\presentation\propertyeditor\propertyeditor.cpp:583] UE4Editor_PropertyEditor!SEditConditionWidget::OnGetEditConditionCheckState() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertyeditorhelpers.cpp:384] UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<1,SEditConditionWidget,0,enum ECheckBoxState __cdecl(void)>::Execute() [d:\build\++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:293] UE4Editor_Slate!SCheckBox::OnGetCheckImage() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\input\scheckbox.cpp:252] UE4Editor_Slate!TBaseSPMethodDelegateInstance<1,SCheckBox,0,FSlateBrush const * __cdecl(void)>::Execute() [d:\build\++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:293] UE4Editor_SlateCore!SImage::ComputeDesiredSize() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\images\simage.cpp:47] UE4Editor_SlateCore!SWidget::CacheDesiredSize() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:667] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:556] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:545] UE4Editor_Slate!PrepassWindowAndChildren() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1460] UE4Editor_Slate!PrepassWindowAndChildren() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1468] UE4Editor_Slate!FSlateApplication::DrawPrepass() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1506] UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1553] UE4Editor_Slate!FSlateApplication::DrawWindows() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1279] UE4Editor_Slate!FSlateApplication::TickApplication() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1881] UE4Editor_Slate!FSlateApplication::Tick() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1712] UE4Editor!FEngineLoop::Tick() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:4361] UE4Editor!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:173] UE4Editor!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:147] UE4Editor!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:279] UE4Editor!__scrt_common_main_seh() [d:\agent\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288] kernel32 ntdll
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-81793 in the post.