Crash when duplicating component with Instanced property initialized with CreateDefaultSubobject

An editor crash can be observed when copy-pasting an actor with an actor component with an instanced object property when set to a non-default value.

Detailed steps to reproduce are provided below.

The crash seems to be caused by a check in FObjectInstancingGraph::GetInstancedSubobject at line 210:
checkf(SubobjectOuter && SubobjectOuter != INVALID_OBJECT, TEXT("No corresponding destination object found for '%s' while attempting to instance subobject '%s'"), *SourceSubobject->GetOuter()>GetFullName(), *SourceSubobject>GetFullName());

This behaviour seems similar to that described in this knowledge base article:
https://udn.unrealengine.com/s/article/EditInlineNew-Instanced-Components

 

Use the following code in the header:
UCLASS(BlueprintType, Abstract, EditInlineNew)
class UPL_TestSubobjectBase : public UObject

{ GENERATED_BODY() }

;

UCLASS()
class UPL_TestSubobjectOne : public UPL_TestSubobjectBase
{
GENERATED_BODY()

public:

UPROPERTY(EditAnywhere, BlueprintReadWrite)
int32 One

{ 1 }

;
};

UCLASS()
class UPL_TestSubobjectTwo : public UPL_TestSubobjectBase
{
GENERATED_BODY()

public:

UPROPERTY(EditAnywhere, BlueprintReadWrite)
int32 Two

{ 2 }

;
};

UCLASS(BlueprintType, Meta = (BlueprintSpawnableComponent))
class UPL_TestComponent : public UActorComponent
{
GENERATED_BODY()

public:

UPL_TestComponent(const FObjectInitializer& ObjectInitializer);

UPROPERTY(EditAnywhere, BlueprintReadWrite, Instanced, NoClear)
TObjectPtr<UPL_TestSubobjectBase> TestSubobject

{ nullptr }

;
};

Use the following code in the CPP:
UPL_TestComponent::UPL_TestComponent(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)

{ TestSubobject = CreateDefaultSubobject<UPL_TestSubobjectOne>(TEXT("TestSubobjectOne")); }

Do the following:

• Place a mesh actor in the level
• Select the placed actor and add a UPL_TestComponent
• Save the level
• Change the instanced property value from the default of UPL_TestSubobjectOne to UPL_TestSubobjectTwo
• Copy the actor via ctrl-c and ctrl-v
• Observe an editor crash