Opening blueprint debugger crashes editor

The editor crashes upon attempting to open the blueprint debugger through the Window menu.

Frequency: 2/2

Regression (Yes) issue (does not) occur in 4.11.2

1. Open Editor (any project)
2. Open Window>Developer Tools>Blueprint Debugger

Results

Editor crashes

Expected

Blueprint debugger opens

MachineId:4E82586D46B558EA69EF0EAA821297B1
EpicAccountId:2e342bbd0e92480fa71bf4505b6a81c3

Access violation - code c0000005 (first/second chance not available)

UE4Editor_Kismet!SKismetDebuggingView::GetTopText() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\kismet\private\debugging\skismetdebuggingview.cpp:1025]
UE4Editor_Kismet!TMemberFunctionCaller<SKismetDebuggingView,FText (__cdecl SKismetDebuggingView::*)(void)const __ptr64>::operator()<>() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\delegateinstanceinterface_variadics.h:161]
UE4Editor_Kismet!TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter_ExplicitReturnType<FText,TMemberFunctionCaller<SKismetDebuggingView,FText (__cdecl SKismetDebuggingView::*)(void)const __ptr64> >() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\tuple.h:128]
UE4Editor_Kismet!TBaseSPMethodDelegateInstance<1,SKismetDebuggingView,0,FText __cdecl(void)>::Execute() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:321]
UE4Editor_Slate!TBaseDelegate<FText>::Execute() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl_variadics.inl:521]
UE4Editor_Slate!TAttribute<FText>::Get() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\misc\attribute.h:135]
UE4Editor_Slate!FTextBlockLayout::ComputeDesiredSize() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\widgets\text\textblocklayout.cpp:50]
UE4Editor_Slate!STextBlock::ComputeDesiredSize() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\widgets\text\stextblock.cpp:176]
UE4Editor_SlateCore!SWidget::CacheDesiredSize() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:388]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_SlateCore!SWidget::SlatePrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slatecore\private\widgets\swidget.cpp:376]
UE4Editor_Slate!PrepassWindowAndChildren() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1102]
UE4Editor_Slate!PrepassWindowAndChildren() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1111]
UE4Editor_Slate!FSlateApplication::DrawPrepass() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1150]
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1192]
UE4Editor_Slate!FSlateApplication::DrawWindows() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:964]
UE4Editor_Slate!FSlateApplication::TickApplication() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1553]
UE4Editor_Slate!FSlateApplication::Tick() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1345]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2807]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\launch.cpp:148]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll