Unreal Engine Issues

UE-75123

Deleting elements from TMap Struct in actor blueprint editor causes Crash

Deleting elements from TMap Struct in actor blueprint editor causes Crash

Description

Deleting elements from TMap Struct in the Actor Blueprint Editor (specifically, deleting elements from them) causes Unreal to crash

Steps to Reproduce

Download BugSub.Zip

1. Generate Visual Studio file solutions
2. Open Project in UE.422
3. Navigate to the Content Folder->Open MyMyActor Blueprint
4. From the Components details panel-> Select Thing Component.
5. Within the "Thing" category, Delete Element 0 "Test1" and Element 3 "Test4" from Tmap Array.

Result: Crash

*Expected: *Successful removal of elements.

Callstack
Assertion failed: IsValidIndex(Index) [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\CoreUObject\Public\UObject/UnrealType.h] [Line: 3218] 

KERNELBASE.dll!UnknownFunction []
UE4Editor-Core.dll!ReportAssert() [d:\build\++ue4\sync\engine\source\runtime\core\private\windows\windowsplatformcrashcontext.cpp:553]
UE4Editor-Core.dll!FWindowsErrorOutputDevice::Serialize() [d:\build\++ue4\sync\engine\source\runtime\core\private\windows\windowserroroutputdevice.cpp:79]
UE4Editor-Core.dll!FOutputDevice::LogfImpl() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:71]
UE4Editor-Core.dll!FDebug::AssertFailed() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:440]
UE4Editor-Core.dll!FDebug::CheckVerifyFailedImpl() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:418]
UE4Editor-PropertyEditor.dll!FPropertyNode::PropagateContainerPropertyChange() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertynode.cpp:2583]
UE4Editor-PropertyEditor.dll!FPropertyValueImpl::DeleteChild() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:1479]
UE4Editor-PropertyEditor.dll!FPropertyHandleMap::DeleteItem() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:4600]
UE4Editor-PropertyEditor.dll!FPropertyEditor::OnDeleteItem() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\presentation\propertyeditor\propertyeditor.cpp:322]
UE4Editor-PropertyEditor.dll!TBaseSPMethodDelegateInstance<0,FPropertyEditor,0,void __cdecl(void)>::ExecuteIfSafe() [d:\build\++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:355]
UE4Editor-PropertyEditor.dll!SDetailsViewBase::Tick() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\sdetailsviewbase.cpp:738]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1002]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-Slate.dll!SBox::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\layout\sbox.cpp:306]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor-Slate.dll!SBorder::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:119]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor-Slate.dll!SBorder::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:119]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SOverlay::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:95]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor-Slate.dll!SSplitter::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:164]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SOverlay::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:95]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor-Slate.dll!SBorder::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:119]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SOverlay::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:95]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor-Slate.dll!SSplitter::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:164]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SOverlay::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:95]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SPanel::PaintArrangedChildren() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor-SlateCore.dll!SPanel::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SOverlay::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:95]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SCompoundWidget::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor-SlateCore.dll!SWindow::OnPaint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swindow.cpp:1945]
UE4Editor-SlateCore.dll!SWidget::Paint() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:1041]
UE4Editor-SlateCore.dll!SWindow::PaintWindow() [d:\build\++ue4\sync\engine\source\runtime\slatecore\private\widgets\swindow.cpp:1933]
UE4Editor-Slate.dll!FSlateApplication::DrawWindowAndChildren() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1289]
UE4Editor-Slate.dll!FSlateApplication::DrawWindowAndChildren() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1388]
UE4Editor-Slate.dll!FSlateApplication::PrivateDrawWindows() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1563]
UE4Editor-Slate.dll!FSlateApplication::DrawWindows() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1246]
UE4Editor-Slate.dll!FSlateApplication::TickApplication() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1848]
UE4Editor-Slate.dll!FSlateApplication::Tick() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1679]
UE4Editor.exe!FEngineLoop::Tick() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:4071]
UE4Editor.exe!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:168]
UE4Editor.exe!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:145]
UE4Editor.exe!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:275]
UE4Editor.exe!__scrt_common_main_seh() [d:\agent\_work\3\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
KERNEL32.DLL!UnknownFunction []
ntdll.dll!UnknownFunction []

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Fixed
ComponentUE - Editor - UI Systems - Slate
Affects Versions4.21, 4.22, 4.23
Target Fix4.23
Fix Commit7247482
Main Commit7247483
Release Commit7247482
CreatedMay 24, 2019
ResolvedJul 9, 2019
UpdatedSep 27, 2021