Unreal Engine Issues and Bug Tracker (UE-46558)

Description
When pausing a widget animation by using an event using the event track to pause the animation the editor crashes when you play the animation via PIE or standalone.
Tested in
4.15.3 - CL 3450819
4.16.1 - CL 3466753
4.17 - CL 3505911
Steps to Reproduce
Open the Test project provided
PIE
Result: The editor crashes
Expected Result: The Editor does not crash
Callstack
Assertion failed: Ptr [File:D:\Build\++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\MovieScene\Public\Evaluation/PersistentEvaluationData.h] [Line: 323] 



UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349]
UE4Editor_MovieSceneTracks!FPersistentEvaluationData::Get<FColorSectionData>() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\moviescene\public\evaluation\persistentevaluationdata.h:324]
UE4Editor_MovieSceneTracks!FMovieSceneColorSectionTemplate::Initialize() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\moviescenetracks\private\evaluation\moviescenecolortemplate.cpp:212]
UE4Editor_MovieScene!FMovieSceneEvaluationTrack::DefaultInitialize() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\moviescene\private\evaluation\moviesceneevaluationtrack.cpp:131]
UE4Editor_MovieScene!FMovieSceneEvaluationTrack::Initialize() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\moviescene\private\evaluation\moviesceneevaluationtrack.cpp:125]
UE4Editor_MovieScene!FMovieSceneRootEvaluationTemplateInstance::EvaluateGroup() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\moviescene\private\evaluation\moviesceneevaluationtemplateinstance.cpp:313]
UE4Editor_MovieScene!FMovieSceneRootEvaluationTemplateInstance::Evaluate() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\moviescene\private\evaluation\moviesceneevaluationtemplateinstance.cpp:258]
UE4Editor_UMG!UUMGSequencePlayer::Tick() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\umg\private\animation\umgsequenceplayer.cpp:113]
UE4Editor_UMG!UUserWidget::TickActionsAndAnimation() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\umg\private\userwidget.cpp:1272]
UE4Editor_UMG!UUserWidget::NativeTick() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\umg\private\userwidget.cpp:1253]
UE4Editor_UMG!SObjectWidget::Tick() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\umg\private\slate\sobjectwidget.cpp:70]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:773]
UE4Editor_Slate!SConstraintCanvas::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\layout\sconstraintcanvas.cpp:227]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_Slate!SScissorRectBox::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\layout\sscissorrectbox.cpp:78]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_Slate!SViewport::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\sviewport.cpp:125]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_Slate!SCanvas::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\scanvas.cpp:117]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_Slate!SBorder::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:86]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_Slate!SSplitter::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:168]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_Slate!SSplitter::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:168]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_Slate!SSplitter::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:168]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_Slate!SSplitter::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:168]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_Slate!SBorder::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:86]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_Slate!SSplitter::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:168]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:46]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:21]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:37]
UE4Editor_SlateCore!SWindow::OnPaint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swindow.cpp:1838]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:776]
UE4Editor_Slate!FSlateApplication::DrawWindowAndChildren() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1192]
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1432]
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
Community References
Strange Lightmap artifacts on simple geometry
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Fixed
Component	UE - Anim - Sequencer
Affects Versions	4.15.3, 4.16.1, 4.17
Target Fix	4.17
Fix Commit	3517903
Main Commit	3567077
Release Commit	3521372
Created	Jun 27, 2017
Resolved	Jun 30, 2017
Updated	Apr 27, 2018
UE-46558

Crash from pausing an UMG animation using the event track

Crash from pausing an UMG animation using the event track

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