Description

Crash while switching between tabs in the main tab bar. It's possible this occurs when one of the tabs is being dragged due to the mouse/trackpad still holding the tab after being released.

Crash Report:
[Link Removed]

Call Stack:

<unknown module>! PerformBlockOnThread(FCocoaRunLoopSource&, void () 
<unknown module>! MainThreadCall(void () 
<unknown module>! (anonymous namespace) 
<unknown module>! SEditableText::Tick(FGeometry const&, double, float) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SBox::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SPanel::PaintArrangedChildren(FPaintArgs const&, FArrangedChildren const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SPanel::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SCompoundWidget::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SBorder::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SMenuAnchor::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SCompoundWidget::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SPanel::PaintArrangedChildren(FPaintArgs const&, FArrangedChildren const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SPanel::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SPanel::PaintArrangedChildren(FPaintArgs const&, FArrangedChildren const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SPanel::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SPanel::PaintArrangedChildren(FPaintArgs const&, FArrangedChildren const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SPanel::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SCompoundWidget::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SBorder::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SPanel::PaintArrangedChildren(FPaintArgs const&, FArrangedChildren const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SPanel::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SCompoundWidget::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SPanel::PaintArrangedChildren(FPaintArgs const&, FArrangedChildren const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SSplitter::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SOverlay::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SCompoundWidget::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SCompoundWidget::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SBorder::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SCompoundWidget::OnPaint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWidget::Paint(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! SWindow::PaintWindow(FPaintArgs const&, FGeometry const&, FSlateRect const&, FSlateWindowElementList&, int, FWidgetStyle const&, bool) 
<unknown module>! FSlateApplication::DrawWindowAndChildren(TSharedRef<SWindow, (ESPMode) 
<unknown module>! FSlateApplication::PrivateDrawWindows(TSharedPtr<SWindow, (ESPMode) 
<unknown module>! FSlateApplication::Tick() 
<unknown module>! FEngineLoop::Tick() 
<unknown module>! GuardedMain(wchar_t const*) 
<unknown module>! -[UE4AppDelegate() 
<unknown module>! -[FCocoaGameThread() 
<unknown module>! __NSThread__main__() 
<unknown module>! _pthread_body() 
<unknown module>! _pthread_body() 
<unknown module>! thread_start() 
Steps to Reproduce

1. Open any project
2. Open any Blueprint
3. Move the Blueprint tab into the main tab bar
4. Switch between the level tab and the blueprint tab a few times

Result:
Crash. It's possible this occurs when one of the tabs is being dragged due to the mouse/trackpad still holding the tab after being released.

Have Comments or More Details?

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Fixed
ComponentTools
Affects Versions4.74.8
Target Fix4.7
Fix Commit2441533
Release Commit2441666
CreatedFeb 7, 2015
ResolvedFeb 11, 2015
UpdatedApr 27, 2018