Unreal Engine Issues and Bug Tracker (UE-44269)

Description

Crash occurs when selecting a different type for a variable in the My Blueprint panel.

The crash does not occur when doing this in the Details panel.

This does not occur in UE4/Main.

Similar to [Link Removed], but slightly different repro and callstack.

Steps to Reproduce

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

RESULT

Crash

Callstack

UE4Editor_KismetWidgets!SPinTypeSelector::OnSelectPinType() spintypeselector.cpp:820 
UE4Editor_KismetWidgets!SPinTypeSelector::OnTypeSelectionChanged() spintypeselector.cpp:880 
UE4Editor_KismetWidgets!TBaseSPMethodDelegateInstance<0,SPinTypeSelector,0,TTypeWrapper<void> __cdecl() delegateinstancesimpl.h:327 
UE4Editor_KismetWidgets!TBaseSPMethodDelegateInstance<0,SPinTypeSelector,0,void __cdecl() delegateinstancesimpl.h:434 
UE4Editor_KismetWidgets!TBaseDelegate<void,TSharedPtr<UEdGraphSchema_K2::FPinTypeTreeInfo,0>,enum ESelectInfo::Type>::ExecuteIfBound() delegatesignatureimpl.inl:624 
UE4Editor_KismetWidgets!SListView<TSharedPtr<UEdGraphSchema_K2::FPinTypeTreeInfo,0> >::Private_SignalSelectionChanged() slistview.h:735 
UE4Editor_KismetWidgets!STableRow<TSharedPtr<UEdGraphSchema_K2::FPinTypeTreeInfo,0> >::OnMouseButtonUp() stablerow.h:476 
UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() slateapplication.cpp:5049 
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() slateapplication.cpp:239 
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() slateapplication.cpp:5038 
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() slateapplication.cpp:5515 
UE4Editor_Slate!FSlateApplication::OnMouseUp() slateapplication.cpp:5495 
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1704 
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	3404593
Main Commit	3431398

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

UE-44269

Crash selecting variable type in My Blueprint panel

Crash selecting variable type in My Blueprint panel

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