Description

This was able to be reproduced 100%. I encountered this during a Regression pass. I was trying to give myself more working space and remembered that hitting "Home" focused the space in sequencer, so I thought I would be able to do the same thing here, but I think since there is no real end in the UMG timeline, the home goes on forever and crashes to editor.

Note Tested in 4.13 and the crash is present. This is NOT a regression.

Steps to Reproduce
  1. Open Project
  2. Create New Widget
  3. Add Animation
  4. Add CanvasPanel_0 to Animation Timeline
  5. Add Track Transform
  6. Click in the timeline and press the "Home" button
  7. Try to RMB and drag the timeline.

Result: The editor freezes up and crashes

Expected: I am able to focus the timeline by pressing home and then be able to scrub the timeline using RMB

Callstack
MachineId:99734049456FBD53C9156F971CDCCF71
EpicAccountId:d61c17c3cd5a45f58abdaf87b3c494b5

Fatal error: [File:D:\Build\++UE4+Release-4.14+Compile\Sync\Engine\Source\Runtime\Core\Private\GenericPlatform\GenericPlatformMemory.cpp] [Line: 152] 
Ran out of memory allocating 36766113664 bytes with alignment 0


UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:332]
UE4Editor_Core!FGenericPlatformMemory::OnOutOfMemory() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\private\genericplatform\genericplatformmemory.cpp:153]
UE4Editor_Core!FMallocTBB::Realloc() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\private\hal\malloctbb.cpp:99]
UE4Editor_SlateCore!TArray<FSlateDrawElement,FDefaultAllocator>::ResizeGrow() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\public\containers\array.h:2235]
UE4Editor_SlateCore!TArray<FSlateDrawElement,FDefaultAllocator>::AddDefaulted() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\public\containers\array.h:1812]
UE4Editor_SlateCore!FSlateDrawElement::MakeLines() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\rendering\drawelements.cpp:222]
UE4Editor_Sequencer!FSequencerTimeSliderController::DrawTicks() [d:\build\++ue4+release-4.14+compile\sync\engine\source\editor\sequencer\private\sequencertimeslidercontroller.cpp:179]
UE4Editor_Sequencer!FSequencerTimeSliderController::OnPaintSectionView() [d:\build\++ue4+release-4.14+compile\sync\engine\source\editor\sequencer\private\sequencertimeslidercontroller.cpp:914]
UE4Editor_Sequencer!SSequencerSectionOverlay::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\editor\sequencer\private\ssequencersectionoverlay.cpp:20]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_Slate!SGridPanel::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\widgets\layout\sgridpanel.cpp:100]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:100]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:44]
UE4Editor_Slate!SSplitter::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:166]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:44]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:19]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:25]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:100]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:25]
UE4Editor_Slate!SBorder::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:86]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:100]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:44]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:19]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:25]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:44]
UE4Editor_Slate!SSplitter::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:166]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:25]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:44]
UE4Editor_Slate!SSplitter::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:166]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:100]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:25]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:44]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:19]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:25]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:25]
UE4Editor_Slate!SBorder::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:86]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:100]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:44]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:19]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:25]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:44]
UE4Editor_Slate!SSplitter::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:166]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:100]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:25]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:44]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:19]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:44]
UE4Editor_SlateCore!SPanel::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:19]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SOverlay::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:100]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:25]
UE4Editor_SlateCore!SWindow::OnPaint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swindow.cpp:1807]
UE4Editor_SlateCore!SWidget::Paint() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:692]
UE4Editor_Slate!FSlateApplication::DrawWindowAndChildren() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1127]
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1367]
UE4Editor_Slate!FSlateApplication::DrawWindows() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1084]
UE4Editor_Slate!FSlateApplication::TickApplication() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1689]
UE4Editor_Slate!FSlateApplication::Tick() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1481]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2894]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\launch.cpp:152]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll

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Fixed
ComponentTools - Sequencer
Affects Versions4.14
Target Fix4.14
Fix Commit3165444
Release Commit3165444
CreatedOct 17, 2016
ResolvedOct 18, 2016
UpdatedApr 27, 2018