Crash Generating Proxy Mesh with Transition Screen Size set to 1

UE4Editor_Engine!FKAggregateGeom::~FKAggregateGeom() 
UE4Editor_MeshUtilities!TArray<FRawMeshExt,FDefaultAllocator>::~TArray<FRawMeshExt,FDefaultAllocator>() array.h:553 
UE4Editor_MeshUtilities!FMeshUtilities::MergeStaticMeshComponents() meshutilities.cpp:8151 
UE4Editor_HierarchicalLODUtilities!FHierarchicalLODUtilities::BuildStaticMeshForLODActor() hierarchicallodutilities.cpp:208 
UE4Editor_UnrealEd!FHierarchicalLODBuilder::BuildMeshesForLODActors() hierarchicallod.cpp:504 
UE4Editor_HierarchicalLODOutliner!HLODOutliner::SHLODOutliner::HandleBuildLODActors() hlodoutliner.cpp:450 
UE4Editor_HierarchicalLODOutliner!TMemberFunctionCaller<HLODOutliner::SHLODOutliner,FReply() delegateinstanceinterface.h:161 
UE4Editor_HierarchicalLODOutliner!TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<HLODOutliner::SHLODOutliner,FReply() tuple.h:116
UE4Editor_HierarchicalLODOutliner!TBaseSPMethodDelegateInstance<0,HLODOutliner::SHLODOutliner,0,FReply __cdecl() delegateinstancesimpl.h:318 
UE4Editor_Slate!TBaseDelegate<FReply>::Execute() delegatesignatureimpl.inl:522 
UE4Editor_Slate!SButton::OnMouseButtonUp() sbutton.cpp:275 
UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() slateapplication.cpp:5010 
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() slateapplication.cpp:215
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() slateapplication.cpp:4999 
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() slateapplication.cpp:5462 
UE4Editor_Slate!FSlateApplication::OnMouseUp() slateapplication.cpp:5439 
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1690 
UE4Editor_Core!FWindowsApplication::DeferMessage() windowsapplication.cpp:2109 
UE4Editor_Core!FWindowsApplication::ProcessMessage() windowsapplication.cpp:859 
UE4Editor_Core!FWindowsApplication::AppWndProc() windowsapplication.cpp:706 
user32!<Unknown> 
user32!<Unknown> 
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() windowsplatformmisc.cpp:951 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2806 
UE4Editor!GuardedMain() launch.cpp:152 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 
UE4Editor!WinMain() launchwindows.cpp:202 
UE4Editor!__scrt_common_main_seh() exe_common.inl:264 
kernel32!<Unknown> 
ntdll!<Unknown>