Crash occurs when the user sorts array elements in the Project Settings.
This seems to occur with any arrays in the Project Settings, but I haven't been able to reproduce the crash outside of them.
RESULT
Crash.
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000010 UE4Editor-SettingsEditor.dll!SSettingsEditor::NotifyPostChange() [e:\release\engine\source\developer\settingseditor\private\widgets\ssettingseditor.cpp:171] UE4Editor-PropertyEditor.dll!FPropertyNode::NotifyPostChange() [e:\release\engine\source\editor\propertyeditor\private\propertynode.cpp:2441] UE4Editor-PropertyEditor.dll!FPropertyValueImpl::MoveElementTo() [e:\release\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:2091] UE4Editor-PropertyEditor.dll!FPropertyHandleArray::MoveElementTo() [e:\release\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:4259] UE4Editor-PropertyEditor.dll!SDetailSingleItemRow::OnArrayDrop() [e:\release\engine\source\editor\propertyeditor\private\sdetailsingleitemrow.cpp:193] UE4Editor-PropertyEditor.dll!TMemberFunctionCaller<SDetailSingleItemRow,FReply (__cdecl SDetailSingleItemRow::*)(FDragDropEvent const & __ptr64) __ptr64>::operator()<FDragDropEvent const & __ptr64>() [e:\release\engine\source\runtime\core\public\delegates\delegateinstanceinterface.h:165] UE4Editor-PropertyEditor.dll!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SDetailSingleItemRow,FReply (__cdecl SDetailSingleItemRow::*)(FDragDropEvent const & __ptr64) __ptr64>,FDragDropEvent const & __ptr64>() [e:\release\engine\source\runtime\core\public\templates\tuple.h:497] UE4Editor-PropertyEditor.dll!TBaseSPMethodDelegateInstance<0,SDetailSingleItemRow,0,FReply __cdecl(FDragDropEvent const & __ptr64)>::Execute() [e:\release\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327] UE4Editor-PropertyEditor.dll!TBaseDelegate<FReply,FDragDropEvent const & __ptr64>::Execute() [e:\release\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:537] UE4Editor-PropertyEditor.dll!STableRow<TSharedPtr<FDetailTreeNode,0> >::OnDrop() [e:\release\engine\source\runtime\slate\public\widgets\views\stablerow.h:698] UE4Editor-Slate.dll!<lambda_74ecb22bb70e3f50c9d83154dfa5c688>::operator()() [e:\release\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5295] UE4Editor-Slate.dll!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FPointerEvent,<lambda_74ecb22bb70e3f50c9d83154dfa5c688> >() [e:\release\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:234] UE4Editor-Slate.dll!FSlateApplication::RoutePointerUpEvent() [e:\release\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5291] UE4Editor-Slate.dll!FSlateApplication::ProcessMouseButtonUpEvent() [e:\release\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5745] UE4Editor-Slate.dll!FSlateApplication::OnMouseUp() [e:\release\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5725] UE4Editor-ApplicationCore.dll!FWindowsApplication::ProcessDeferredMessage() [e:\release\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:1725] UE4Editor-ApplicationCore.dll!FWindowsApplication::DeferMessage() [e:\release\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:2171] UE4Editor-ApplicationCore.dll!FWindowsApplication::ProcessMessage() [e:\release\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:888] UE4Editor-ApplicationCore.dll!FWindowsApplication::AppWndProc() [e:\release\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:725] USER32.dll!UnknownFunction [] USER32.dll!UnknownFunction [] UE4Editor-ApplicationCore.dll!FWindowsPlatformApplicationMisc::PumpMessages() [e:\release\engine\source\runtime\applicationcore\private\windows\windowsplatformapplicationmisc.cpp:129] UE4Editor.exe!FEngineLoop::Tick() [e:\release\engine\source\runtime\launch\private\launchengineloop.cpp:3219] UE4Editor.exe!GuardedMain() [e:\release\engine\source\runtime\launch\private\launch.cpp:166] UE4Editor.exe!GuardedMainWrapper() [e:\release\engine\source\runtime\launch\private\windows\launchwindows.cpp:134] UE4Editor.exe!WinMain() [e:\release\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:253] kernel32.dll!UnknownFunction [] ntdll.dll!UnknownFunction [] ntdll.dll!UnknownFunction []
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-49839 in the post.