Unreal Engine Issues and Bug Tracker (UE-36740)

Description

Editor is crashing when removing and Additive layer Track in persona.

Editor also crashes if the curve is disabled rather than deleted.

This is a regression from 4.13

Steps to Reproduce

Open a ThirdPerson template in the editor
Open the ThirdPersonRun animation
Select the Pelvis bone
Add a key by pressing the Key icon in the toolbar
Remove the Additive Layer Track that was just created

Result: Editor crashes

Callstack

UE4Editor_Persona!SAnimTrackCurvePanel::DeleteTrack() sanimtrackcurvepanel.cpp:581 
UE4Editor_Persona!TBaseSPMethodDelegateInstance<0,SAnimTrackCurvePanel const ,0,TTypeWrapper<void> __cdecl() delegateinstancesimpl.h:318 
UE4Editor_Persona!TBaseSPMethodDelegateInstance<0,SAnimTrackCurvePanel const ,0,void __cdecl() delegateinstancesimpl.h:425 
UE4Editor_Slate!SMenuEntryBlock::OnClicked() smenuentryblock.cpp:1036 
UE4Editor_Slate!SMenuEntryBlock::OnMenuItemButtonClicked() smenuentryblock.cpp:987 
UE4Editor_Slate!TMemberFunctionCaller<SMenuEntryBlock,FReply() delegateinstanceinterface.h:161 
UE4Editor_Slate!TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SMenuEntryBlock,FReply() tuple.h:116 
UE4Editor_Slate!TBaseSPMethodDelegateInstance<0,SMenuEntryBlock,0,FReply __cdecl() delegateinstancesimpl.h:318 
UE4Editor_Slate!TBaseDelegate<FReply>::Execute() delegatesignatureimpl.inl:522 
UE4Editor_Slate!SButton::OnMouseButtonUp() sbutton.cpp:279 
UE4Editor_Slate!SMenuEntryButton::OnMouseButtonUp() smenuentryblock.cpp:385 
UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() slateapplication.cpp:5002 
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() slateapplication.cpp:215 
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() slateapplication.cpp:4991 
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() slateapplication.cpp:5454 
UE4Editor_Slate!FSlateApplication::OnMouseUp() slateapplication.cpp:5431 
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1639 
UE4Editor_Core!FWindowsApplication::DeferMessage() windowsapplication.cpp:1985 
UE4Editor_Core!FWindowsApplication::ProcessMessage() windowsapplication.cpp:750 
UE4Editor_Core!FWindowsApplication::AppWndProc() windowsapplication.cpp:672 
user32!<Unknown> 
user32!<Unknown> 
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() windowsplatformmisc.cpp:889 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2796 
UE4Editor!GuardedMain() launch.cpp:156 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 
UE4Editor!WinMain() launchwindows.cpp:202 
UE4Editor!__scrt_common_main_seh() exe_common.inl:253 
kernel32!<Unknown> 
ntdll!<Unknown>

Community References

Projects crash when launched with 2 players

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Fixed

Component	OLD - Anim
Affects Versions	4.14
Target Fix	4.14

Fix Commit	3153160
Main Commit	3153517

Created	Oct 3, 2016
Resolved	Oct 6, 2016
Updated	May 18, 2020

UE-36740

Crash when removing or disabling an additive layer track in Persona

Crash when removing or disabling an additive layer track in Persona

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