Description

Calling a RPC function with a TSet or TMap parameter on a client causes the editor to crash.

Regression?: No
This also occurs in 4.18

Steps to Reproduce
  1. Download the attached project
  2. Open the project and start PIE with 2 players
  3. On the client, press the H key
    Result: The client crashes due to calling a RPC function with a TSet parameter
    Expected: The function runs successfully and no crash occurs
Callstack
Fatal error: [File:D:\Build\++UE4+Release-4.19+Compile\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\PropertySet.cpp] [Line: 391] Deprecated code path

UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:419]
UE4Editor_CoreUObject!USetProperty::NetSerializeItem() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\propertyset.cpp:392]
UE4Editor_Engine!FRepLayout::SerializeProperties_r() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\replayout.cpp:3216]
UE4Editor_Engine!FRepLayout::SendPropertiesForRPC() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\replayout.cpp:3296]
UE4Editor_Engine!UNetDriver::InternalProcessRemoteFunction() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\networkdriver.cpp:1554]
UE4Editor_OnlineSubsystemUtils!UIpNetDriver::ProcessRemoteFunction() [d:\build\++ue4+release-4.19+compile\sync\engine\plugins\online\onlinesubsystemutils\source\onlinesubsystemutils\private\ipnetdriver.cpp:605]
UE4Editor_Engine!AActor::CallRemoteFunction() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\actor.cpp:3867]
UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:749]
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!FInputActionHandlerDynamicSignature::Execute() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\classes\components\inputcomponent.h:108]
UE4Editor_Engine!FInputActionUnifiedDelegate::Execute() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\classes\components\inputcomponent.h:212]
UE4Editor_Engine!UPlayerInput::ProcessInputStack() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\userinterface\playerinput.cpp:1225]
UE4Editor_Engine!APlayerController::ProcessPlayerInput() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\playercontroller.cpp:2471]
UE4Editor_Engine!APlayerController::TickPlayerInput() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\playercontroller.cpp:4232]
UE4Editor_Engine!APlayerController::PlayerTick() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\playercontroller.cpp:2135]
UE4Editor_Engine!APlayerController::TickActor() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\playercontroller.cpp:4327]
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:144]
UE4Editor!WinMain() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:223]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
kernel32
ntdll

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Fixed
ComponentNetworking
Affects Versions4.184.194.20
Target Fix4.20
Fix Commit4158758
Main Commit4202609
Release Commit4158758
CreatedMay 11, 2018
ResolvedJun 25, 2018
UpdatedJul 12, 2018