Editor Crashes When Trying to Render Canvas From Blueprint

This occurs in 4.19p but not in 4.18.

Per User:

As of current preview, there is no possibility to render in blueprint using canvas, (UCanvas::K2_DrawMaterialTriangle always ends up with assert in FLocalVertexFactory::SetData (check(IsInRenderingThread()))

1. Open new level in 4.19
2. Create a new Blueprint and create Event Graph as shown in attached screen shot
3. Place the BP actor into level and then PIE

Result: Crash

LoginId:77ac66cf4b506a51a458c382c4ec63c2
EpicAccountId:5caf2c99925243e8b9b1bdcc9cd0e6cf

Assertion failed: IsInRenderingThread() [Link Removed] [Line: 128]

UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:419]
UE4Editor_Engine!FLocalVertexFactory::SetData() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\localvertexfactory.cpp:128]
UE4Editor_Engine!FCanvasTriangleRendererItem::FTriangleVertexFactory::FTriangleVertexFactory() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\trianglerendering.cpp:169]
UE4Editor_Engine!FCanvasTriangleRendererItem::FRenderData::FRenderData() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\public\canvastypes.h:1273]
UE4Editor_Engine!FCanvasTriangleRendererItem::FCanvasTriangleRendererItem() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\public\canvastypes.h:1139]
UE4Editor_Engine!FCanvasTriangleItem::Draw() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\userinterface\canvasitem.cpp:1524]
UE4Editor_Engine!FCanvas::DrawItem() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\userinterface\canvas.cpp:1875]
UE4Editor_Engine!UCanvas::K2_DrawMaterialTriangle() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\userinterface\canvas.cpp:2068]
UE4Editor_Engine!UCanvas::execK2_DrawMaterialTriangle() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\classes\engine\canvas.h:157]
UE4Editor_CoreUObject!UFunction::Invoke() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:4551]
UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:763]
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2198]
UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:985]
UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:887]
UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:985]
UE4Editor_CoreUObject!UFunction::Invoke() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:4551]
UE4Editor_CoreUObject!UObject::ProcessEvent() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1345]
UE4Editor_Engine!AActor::ProcessEvent() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\actor.cpp:687]
UE4Editor_Engine!AActor::ReceiveTick()
UE4Editor_Engine!AActor::Tick() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\actor.cpp:888]
UE4Editor_Engine!AActor::TickActor() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\actor.cpp:870]
UE4Editor_Engine!FActorTickFunction::ExecuteTick() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\actor.cpp:134]
UE4Editor_Engine!FTickFunctionTask::DoTask() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:273]
UE4Editor_Engine!TGraphTask<FTickFunctionTask>::ExecuteTask() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\public\async\taskgraphinterfaces.h:829]
UE4Editor_Core!FNamedTaskThread::ProcessTasksNamedThread() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:665]
UE4Editor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:574]
UE4Editor_Core!FTaskGraphImplementation::WaitUntilTasksComplete() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:1355]
UE4Editor_Engine!FTickTaskSequencer::ReleaseTickGroup() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:542]
UE4Editor_Engine!FTickTaskManager::RunTickGroup() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:1449]
UE4Editor_Engine!UWorld::RunTickGroup() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\leveltick.cpp:770]
UE4Editor_Engine!UWorld::Tick() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\leveltick.cpp:1429]
UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\build\++ue4+release-4.19+compile\sync\engine\source\editor\unrealed\private\editorengine.cpp:1693]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\build\++ue4+release-4.19+compile\sync\engine\source\editor\unrealed\private\unrealedengine.cpp:401]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3339]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
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