A user reported this issue to us through Salesforce. They initially said it crashed with both Spot Lights and Rectangle Lights, but I was only able to repro with Rectangle lights. Additionally, I did not hit the crash when reproducing the issue in Direct X11 without Raytracing.
Tested in //UE4/Release-4.26 @ CL 15973114 and this occurred, so not marking as a Regression
RESULT:
The editor crashes
EXPECTED:
The user is able to add Rectangle Lights in a splitscreen game without crashing
ntdll!7ff952980000 + 9cf24 KERNELBASE!7ff9502a0000 + 41e83 UE4Editor-Core!ReportCrash(_EXCEPTION_POINTERS *) [WindowsPlatformCrashContext.cpp:1591] UE4Editor-RenderCore!static `FRenderingThread::Run'::`1'::filt$0() [RenderingThread.cpp:511] VCRUNTIME140!7ff93cb40000 + ecd0 ntdll!7ff952980000 + a1fff ntdll!7ff952980000 + 6aad9 ntdll!7ff952980000 + a0c6e UE4Editor-RenderCore!FRDGBuilder::Execute() [RenderGraphBuilder.cpp:1338] UE4Editor-Renderer!FDeferredShadingSceneRenderer::Render(FRHICommandListImmediate &) [DeferredShadingRenderer.cpp:2711] UE4Editor-Renderer!static void RenderViewFamily_RenderThread(class FRHICommandListImmediate & const, class FSceneRenderer *) [SceneRendering.cpp:3742] UE4Editor-Renderer!static void <lambda_cc1442c4bafed83188c182dd4b1a4ab0>::operator() [SceneRendering.cpp:4009] UE4Editor-Renderer!static void TEnqueueUniqueRenderCommandType<`FRendererModule::BeginRenderingViewFamily'::`43'::FDrawSceneCommandName,<lambda_cc1442c4bafed83188c182dd4b1a4ab0> >::DoTask(ENamedThreads::Type, const class TRefCountPtr<FGraphEvent> & const) [RenderingThread.h:183] UE4Editor-Renderer!static void TGraphTask<TEnqueueUniqueRenderCommandType<`FRendererModule::BeginRenderingViewFamily'::`43'::FDrawSceneCommandName,<lambda_cc1442c4bafed83188c182dd4b1a4ab0> > >::ExecuteTask(class TArray<FBaseGraphTask *,TSizedDefaultAllocator<32> > & const, ENamedThreads::Type) [TaskGraphInterfaces.h:886] UE4Editor-Core!FNamedTaskThread::ProcessTasksNamedThread(int,bool) [TaskGraph.cpp:710] UE4Editor-Core!FNamedTaskThread::ProcessTasksUntilQuit(int) [TaskGraph.cpp:602] UE4Editor-RenderCore!RenderingThreadMain(FEvent *) [RenderingThread.cpp:373] UE4Editor-RenderCore!FRenderingThread::Run() [RenderingThread.cpp:509] UE4Editor-Core!FRunnableThreadWin::Run() [WindowsRunnableThread.cpp:86] UE4Editor-Core!FRunnableThreadWin::GuardedRun() [WindowsRunnableThread.cpp:35] KERNEL32!7ff951810000 + 17c24 ntdll!7ff952980000 + 6d721
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-134348 in the post.