Actor attached to other actor in LevelInstance has very large bounds

void FLevelUtils::ApplyEditorTransform(const ULevelStreaming* StreamingLevel, bool bDoPostEditMove, AActor* Actor)
{
	check(StreamingLevel);
	if (ULevel* LoadedLevel = StreamingLevel->GetLoadedLevel())
	{	
		FApplyLevelTransformParams TransformParams(LoadedLevel, StreamingLevel->LevelTransform);

#if 1 //workaround
		// Move parent actor instead of child actor
		USceneComponent* RootComponent = Actor->GetRootComponent();
		if (RootComponent && RootComponent->GetAttachParent())
		{
			while( RootComponent->GetAttachParent() )
			{
				RootComponent = RootComponent->GetAttachParent();
			}
			Actor = RootComponent->GetOwner();
		}
#endif
		TransformParams.Actor = Actor;
		TransformParams.bDoPostEditMove = bDoPostEditMove;
		ApplyLevelTransform(TransformParams);
	}
}

void FLevelUtils::RemoveEditorTransform(const ULevelStreaming* StreamingLevel, bool bDoPostEditMove, AActor* Actor)
{
	check(StreamingLevel);
	if (ULevel* LoadedLevel = StreamingLevel->GetLoadedLevel())
	{
		const FTransform InverseTransform = StreamingLevel->LevelTransform.Inverse();
		FApplyLevelTransformParams TransformParams(LoadedLevel, InverseTransform);
		
#if 1 //workaround
		USceneComponent* RootComponent = Actor->GetRootComponent();
		if (RootComponent && RootComponent->GetAttachParent())
		{
			while( RootComponent->GetAttachParent() )
			{
				RootComponent = RootComponent->GetAttachParent();
			}
			Actor = RootComponent->GetOwner();
		}
#endif

		TransformParams.Actor = Actor;
		TransformParams.bDoPostEditMove = bDoPostEditMove;
		ApplyLevelTransform(TransformParams);
	}
}