Editor crashes if you remove cloth from a mesh with a section selected and then close and reopen the mesh

1. Open QAGame
2. Open asset ClothExport
3. Enable section select and click the red cloth
4. In the cloth paint menu (Requires experimental flag to be enabled) Right click and remove ClothExport from the list
5. Close the ClothExport window
6. Reopen the ClothExport asset
   Result
   Crash

UE4Editor_Persona!FAnimationViewportClient::ComputeBoundingBoxForSelectedEditorSection() animationeditorviewportclient.cpp:1576
UE4Editor_Persona!FAnimationViewportClient::FocusViewportOnPreviewMesh() animationeditorviewportclient.cpp:1644
UE4Editor_Persona!FAnimationViewportClient::Draw() animationeditorviewportclient.cpp:456
UE4Editor_Renderer!FSceneRenderer::FSceneRenderer() scenerendering.cpp:1225
UE4Editor_Renderer!FDeferredShadingSceneRenderer::FDeferredShadingSceneRenderer() deferredshadingrenderer.cpp:213
UE4Editor_Renderer!FRendererModule::BeginRenderingViewFamily() scenerendering.cpp:2009
UE4Editor_UnrealEd!FEditorViewportClient::Draw() editorviewportclient.cpp:3396
UE4Editor_Engine!FViewport::Draw() unrealclient.cpp:1198
UE4Editor_Engine!FSceneViewport::ResizeViewport() sceneviewport.cpp:1342
UE4Editor_Engine!FSceneViewport::OnDrawViewport() sceneviewport.cpp:366
UE4Editor_Slate!SViewport::OnPaint() sviewport.cpp:112
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_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!SCompoundWidget::OnPaint() scompoundwidget.cpp:35
UE4Editor_Slate!SBorder::OnPaint() sborder.cpp:85
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!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_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!SOverlay::OnPaint() soverlay.cpp:97
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_SlateCore!SCompoundWidget::OnPaint() scompoundwidget.cpp:35
UE4Editor_Slate!SBorder::OnPaint() sborder.cpp:85
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!SPanel::PaintArrangedChildren() spanel.cpp:31
UE4Editor_Slate!SSplitter::OnPaint() ssplitter.cpp:167
UE4Editor_SlateCore!SWidget::Paint() swidget.cpp:885
UE4Editor_SlateCore!SOverlay::OnPaint() soverlay.cpp:97