Unreal Engine Issues and Bug Tracker (UE-44249)

Description

Crash occurs when the user attempts to change the variable type by clicking on its icon in the My Blueprint panel. No crash occurs when trying this in the Details panel.

This does not reproduce in UE4/Main.

Steps to Reproduce

Open QAGame in editor.
Open the level blueprint.
Add a new variable.
Click the variable icon in the My Blueprint panel.

RESULT

Crash.

WORKAROUND

Change variable type in the Details panel.

Callstack

UE4Editor_KismetWidgets!SPinTypeSelector::GetMenuContent() spintypeselector.cpp:969 
UE4Editor_KismetWidgets!TMemberFunctionCaller<SPinTypeSelector,TSharedRef<SWidget,0>() delegateinstanceinterface.h:165 
UE4Editor_KismetWidgets!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int,0>,bool>::ApplyAfter<TMemberFunctionCaller<SPinTypeSelector,TSharedRe tuple.h:422 
UE4Editor_KismetWidgets!TBaseSPMethodDelegateInstance<0,SPinTypeSelector,0,TSharedRef<SWidget,0> __cdecl() delegateinstancesimpl.h:327 
UE4Editor_Slate!TBaseDelegate<TSharedRef<SWidget,0> >::Execute() delegatesignatureimpl.inl:537 
UE4Editor_Slate!SMenuAnchor::SetIsOpen() smenuanchor.cpp:315 
UE4Editor_Slate!SComboButton::OnButtonClicked() scombobutton.cpp:86 
UE4Editor_Slate!TMemberFunctionCaller<SComboButton,FReply() delegateinstanceinterface.h:165 
UE4Editor_Slate!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SComboButton,FReply() tuple.h:497 
UE4Editor_Slate!TBaseSPMethodDelegateInstance<0,SComboButton,0,FReply __cdecl() delegateinstancesimpl.h:327 
UE4Editor_Slate!TBaseDelegate<FReply>::Execute() delegatesignatureimpl.inl:537 
UE4Editor_Slate!SButton::OnMouseButtonDown() sbutton.cpp:215 
UE4Editor_Slate!<lambda_7097b900f0e4be30d80fb18f98c51ea0>::operator() slateapplication.cpp:4953 
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FPointerEvent,<lambda_7097b900f0e4be30d80fb18f98c51ea0> >() slateapplication.cpp:239 
UE4Editor_Slate!FSlateApplication::RoutePointerDownEvent() slateapplication.cpp:4942 
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonDownEvent() slateapplication.cpp:4898 
UE4Editor_Slate!FSlateApplication::OnMouseDown() slateapplication.cpp:4816 
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1712 
UE4Editor_Core!FWindowsApplication::DeferMessage() windowsapplication.cpp:2127 
UE4Editor_Core!FWindowsApplication::ProcessMessage() windowsapplication.cpp:867 
UE4Editor_Core!FWindowsApplication::AppWndProc() windowsapplication.cpp:714 
user32!<Unknown> 
user32!<Unknown> 
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() windowsplatformmisc.cpp:980 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:3056 
UE4Editor!GuardedMain() launch.cpp:166 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:134 
UE4Editor!WinMain() launchwindows.cpp:210 
UE4Editor!__scrt_common_main_seh() exe_common.inl:253 
kernel32!<Unknown> 
ntdll!<Unknown>

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Fixed

Component	UE - Gameplay - Blueprint Editor
Affects Versions	4.17
Target Fix	4.17

Fix Commit	3404188
Main Commit	3431398

Created	Apr 21, 2017
Resolved	Apr 21, 2017
Updated	May 12, 2017

UE-44249

Crash attempting to change Variable Type from My Blueprint panel

Crash attempting to change Variable Type from My Blueprint panel

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