This is a common crash affecting users on Windows and Linux. It also appears related to an older Mac crash ([Link Removed]). Users have not provided any new descriptions.
Source Context
959 void RemoveDelegateInstance( FDelegateHandle Handle )
960 {
961 const TInvocationList& LocalInvocationList = GetInvocationList();
962
963 for (int32 InvocationListIndex = 0; InvocationListIndex < LocalInvocationList.Num(); ++InvocationListIndex)
964 {
965 // InvocationList is const, so we const_cast to be able to unbind the entry
966 // TODO: This is horrible, can we get the base class to do it?
967 FDelegateBase& DelegateBase = const_cast<FDelegateBase&>(LocalInvocationList[InvocationListIndex]);
968
969 ***** IDelegateInstance* DelegateInstanceInterface = Super::GetDelegateInstanceProtectedHelper(DelegateBase);
970 if ((DelegateInstanceInterface != nullptr) && DelegateInstanceInterface->GetHandle() == Handle)
971 {
972 DelegateBase.Unbind();
973
974 break; // each delegate binding has a unique handle, so once we find it, we can stop
975 }
976 }
977
978 CompactInvocationList();
979 }
980 };
repro steps currently unknown
Access violation - code c0000005 (first/second chance not available) UE4Editor_ClassViewer!TBaseMulticastDelegate<void>::RemoveDelegateInstance() [delegatesignatureimpl.inl:970] UE4Editor_ClassViewer!FClassHierarchy::~FClassHierarchy() [sclassviewer.cpp:1655] UE4Editor_ClassViewer!SharedPointerInternals::TReferenceControllerWithDeleter<FClassHierarchy,SharedPointerInternals::DefaultDeleter<FClassHierarchy> >::DestroyObject() [sharedpointerinternals.h:110] UE4Editor_ClassViewer!FClassViewerModule::ShutdownModule() [classviewermodule.cpp:80] UE4Editor_Core!FModuleManager::UnloadModule() [modulemanager.cpp:565] UE4Editor_Core!FModuleManager::UnloadModulesAtShutdown() [modulemanager.cpp:692] UE4Editor!FEngineLoop::Exit() [launchengineloop.cpp:2757] UE4Editor!GuardedMain() [launch.cpp:177] UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134] UE4Editor!WinMain() [launchwindows.cpp:210] UE4Editor!__scrt_common_main_seh() [exe_common.inl:253] kernel32!BaseThreadInitThunk() ntdll!RtlUserThreadStart()
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-47264 in the post.