Can't scroll editor detail panel

As you can see, scroll bar immediately collapses after updating it’s length, and also i can not scroll the panel with mouse wheel either.

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I spent almost 1 week to fix this, but i couldn’t handle it properly…

it will be so nice if you share a solution for this. Thank you

Full source code for detail panel:

class SSpineRigDataPropertiesTabBody : public SCompoundWidget

{

public:

	SLATE_BEGIN_ARGS(SSpineRigDataPropertiesTabBody) {}

	SLATE_ARGUMENT(TWeakPtr<FSpineRigDataEditorToolkit>, InParentToolkits)

		SLATE_END_ARGS()
public:

	TWeakPtr<class FSpineRigDataEditorToolkit> SpineRigDataEditorToolkitPtr;

	TSharedPtr<class IDetailsView> PropertyView;

public:

void Construct(const FArguments& InArgs)
{
	SpineRigDataEditorToolkitPtr = InArgs._InParentToolkits;

	FDetailsViewArgs DetailsViewArgs(false, false, true, FDetailsViewArgs::HideNameArea, true);
	DetailsViewArgs.bAllowSearch = false;

	FPropertyEditorModule& PropertyEditorModule = FModuleManager::LoadModuleChecked<FPropertyEditorModule>("PropertyEditor");
	PropertyView = PropertyEditorModule.CreateDetailView(DetailsViewArgs);

	PropertyView->RegisterInstancedCustomPropertyLayout(USpineRigData::StaticClass(), FOnGetDetailCustomizationInstance::CreateStatic(&FSpineRigDataDetailsCustomization::MakeInstance));
	PropertyView->SetObject(SpineRigDataEditorToolkitPtr.Pin()->GetEditingAsset());

	ChildSlot
		[
			PropertyView.ToSharedRef()
		];

}

// 
void SetPropertyWindowContents(TArray<UObject*> Objects) {
	if (FSlateApplication::IsInitialized())
	{
		check(PropertyView.IsValid());
		PropertyView->SetObjects(Objects);
	}
}

void UpdateShowingObject(TArray<UObject*> Objects) {
	if (Objects.Num()) {
		SetPropertyWindowContents(Objects);
	}
	else {
		TArray<UObject*> Arr;
		Arr.Add(SpineRigDataEditorToolkitPtr.Pin()->GetEditingAsset());

		SetPropertyWindowContents(Arr);
	}
}
};