Unreal Engine Issues and Bug Tracker (UE-47603)

Description

This is a trending crash in the 4.17 preview.

This is a regression
Broken: 4.17.0-3528061
Worked: 4.16.2-3514769

User Descriptions

project/settings/intern..language. Crashed it just by scrolling that list with mwheel this time.
Same again. Crashed when scrolling to "english" in project settings/packaging/internati....
Crashed scrolling through languages at project settings/packaging again..? Right when Im about to scroll past English(which was preselected this time). STrange!
I was in project settings, scrolling through internationalisation countries list in packaging settings. Hit "select none" and a little flag popped up, started scrolling, the it crashed straight to here.
Scrolling the culture list in Project Settings > Packaging

Steps to Reproduce

Open any project in 4.17
Choose Edit > Project Settings
Under 'Project', choose Packaging
In the "Packaging" section, click the downward arrow to expand to see all options
In the Localizations to Package option, use the mouse-wheel to scroll down until around the "English" option. (you can also use the scroll bar, but need to scroll slowly)

RESULT: Crash

Callstack

Assertion failed: false [File:D:\Build\++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Slate\Public\Widgets/Views/SListView.h] [Line: 617] SListView<OptionType> [SMultipleOptionTable.h(195)] 
detected a critical error. See diagnostic dump above. Provide a custom 'OnItemToString_Debug' for more detailed diagnostics.

UE4Editor_UnrealEd!SListView<TSharedPtr<FCulture,1> >::FWidgetGenerator::ValidateWidgetGeneration() [slistview.h:617]
UE4Editor_UnrealEd!SListView<TSharedPtr<FCulture,1> >::FWidgetGenerator::OnEndGenerationPass() [slistview.h:536]
UE4Editor_UnrealEd!SListView<TSharedPtr<FCulture,1> >::ReGenerateItems() [slistview.h:986]
UE4Editor_Slate!STableViewBase::Tick() [stableviewbase.cpp:249]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:859]
UE4Editor_Slate!SBox::OnPaint() [sbox.cpp:245]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_Slate!SBox::OnPaint() [sbox.cpp:245]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_Slate!SSplitter::OnPaint() [ssplitter.cpp:167]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_Slate!SBorder::OnPaint() [sborder.cpp:85]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_Slate!SBorder::OnPaint() [sborder.cpp:85]
UE4Editor_PropertyEditor!STableRow<TSharedPtr<IDetailTreeNode,0> >::OnPaint() [stablerow.h:239]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_Slate!STableViewBase::OnPaint() [stableviewbase.cpp:633]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SOverlay::OnPaint() [soverlay.cpp:97]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SOverlay::OnPaint() [soverlay.cpp:97]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_Slate!SBorder::OnPaint() [sborder.cpp:85]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:885]

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Fixed

Component	Tools
Affects Versions	4.17
Target Fix	4.17

Fix Commit	3550998
Main Commit	3596628
Release Commit	3550998

Created	Jul 21, 2017
Resolved	Jul 24, 2017
Updated	Apr 27, 2018

UE-47603

Crash while scrolling through language options in Packaging settings

Crash while scrolling through language options in Packaging settings

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