It looks like it is null reference in propertymatrix.
It always occurs when I execute the reproduction procedure.
1. Open blank project.
2. On click current level's actor. (select any actor)
3. On click "Detail Tab", and click propertymatrix button. (show propertyamatrix)
4. Deleting selected actor.
Access violation - code c0000005 (first/second chance not available) UE4Editor_UnrealEd!FAssetEditorToolkit::GetDefaultTabIcon() [d:\build\++ue4+release-4.16+compile\sync\engine\source\editor\unrealed\private\toolkits\asseteditortoolkit.cpp:631] UE4Editor_UnrealEd!TBaseSPMethodDelegateInstance<1,FAssetEditorToolkit,0,FSlateBrush const * __ptr64 __cdecl(void)>::Execute() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327] UE4Editor_Slate!TAttribute<FSlateBrush const * __ptr64>::Get() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\public\misc\attribute.h:137] UE4Editor_Slate!SDockTab::GetTabIcon() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\docking\sdocktab.cpp:698] UE4Editor_Slate!TBaseSPMethodDelegateInstance<1,SDockTab,0,FSlateBrush const * __ptr64 __cdecl(void)>::Execute() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327] UE4Editor_Slate!TAttribute<FSlateBrush const * __ptr64>::Get() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\public\misc\attribute.h:137] UE4Editor_Slate!SImage::ComputeDesiredSize() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\images\simage.cpp:62] UE4Editor_SlateCore!SWidget::CacheDesiredSize() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:482] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:470] UE4Editor_Slate!PrepassWindowAndChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1302] UE4Editor_Slate!PrepassWindowAndChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1311] UE4Editor_Slate!FSlateApplication::DrawPrepass() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1350] UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1392] UE4Editor_Slate!FSlateApplication::DrawWindows() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1149] UE4Editor_Slate!FSlateApplication::TickApplication() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1726] UE4Editor_Slate!FSlateApplication::Tick() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1548] UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3182] UE4Editor!GuardedMain() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\launch\private\launch.cpp:166] UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134] UE4Editor!WinMain() [d:\build\++ue4+release-4.16+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
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-47072 in the post.