100% repro:



Ensure condition failed: !bHasLoaderImportFlag || GUObjectArray.IsDisregardForGC(Obj) [File:D:\ue5\main\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp] [Line: 5394] 
Object 'RigVMMemoryStorage /Game/Crowd/Character/Shared/Rig/Neck_CtrlRig.Default__Neck_CtrlRig_C:VM.RigVMMemoryStorage_7' (ObjectFlags=280000, InternalObjectFlags=100000) should not have the LoaderImport flag now, or this check is incorrectly reached during active loading.


>	CitySample.exe!VerifyLoadFlagsWhenFinishedLoading() Line 5389	C++	Symbols loaded.
 	CitySample.exe!FAsyncLoadingThread2::NotifyUnreachableObjects(const TArrayView<FUObjectItem *,int> & UnreachableObjects) Line 5526	C++	Symbols loaded.
 	CitySample.exe!NotifyUnreachableObjects(const TArrayView<FUObjectItem *,int> & UnreachableObjects) Line 1036	C++	Symbols loaded.
 	CitySample.exe!CollectGarbageInternal(EObjectFlags KeepFlags, bool bPerformFullPurge) Line 2326	C++	Symbols loaded.
 	CitySample.exe!CollectGarbage(EObjectFlags KeepFlags, bool bPerformFullPurge) Line 2543	C++	Symbols loaded.
 	CitySample.exe!UEngine::TrimMemory() Line 14519	C++	Symbols loaded.
 	CitySample.exe!UEngine::LoadMap(FWorldContext & WorldContext, FURL URL, UPendingNetGame * Pending, FString & Error) Line 14118	C++	Symbols loaded.
 	CitySample.exe!UEngine::Browse(FWorldContext & WorldContext, FURL URL, FString & Error) Line 13640	C++	Symbols loaded.
 	CitySample.exe!UGameInstance::StartGameInstance() Line 598	C++	Symbols loaded.
 	CitySample.exe!FEngineLoop::Init() Line 4325	C++	Symbols loaded.
 	[Inline Frame] CitySample.exe!EngineInit() Line 52	C++	Symbols loaded.
 	CitySample.exe!GuardedMain(const wchar_t * CmdLine) Line 166	C++	Symbols loaded.
 	CitySample.exe!WinMain(HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, char * __formal, int nCmdShow) Line 270	C++	Symbols loaded.



Steps to Reproduce

Looking at the history of BootTestXSX it hasn't hit that ensure, there's been quite a few runs between the CL marked on that Jira and today - [Link Removed]

AutoTest hasn't hit it either - [Link Removed]

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-148551 in the post.

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CreatedApr 7, 2022
ResolvedAug 29, 2022
UpdatedAug 30, 2022