SetPositionInVieport don't work correctly

[METRO_O]

I’m trying to make an inventory item management widget that should appear when you right click on an item. I create this widget and set the mouse position to the widget. The problem is that the widget does not appear near the cursor but somewhere below.
Code.
// EContext_Menu_Actions
//-------------------------------------------------------------------------------------
UENUM() enum class EContext_Menu_Actions: int32
{

• Use,*
• Drop,*
  };
  //-------------------------------------------------------------------------------------

// UContext_Menu_Widget
//-------------------------------------------------------------------------------------
UCLASS(Abstract) class UContext_Menu_Widget : public UUserWidget
{

• GENERATED_BODY()*

public:

• virtual void NativeConstruct();*
• void Create_Action_Button(const EContext_Menu_Actions &action);*

protected:

• UPROPERTY(meta = (BindWidget) ) UVerticalBox *Action_List; *

private:

• UFUNCTION() void On_Action_Use();*
• UFUNCTION() void On_Action_Drop();*
  };
  //-------------------------------------------------------------------------------------

// UContext_Menu_Widget
//------------------------------------------------------------------------------------------------------------
void UContext_Menu_Widget::NativeConstruct()
{
}
//------------------------------------------------------------------------------------------------------------
void UContext_Menu_Widget::Create_Action_Button(const EContext_Menu_Actions &action)
{

• UButton new_button_widget = NewObject(this);

• UTextBlock button_text_widget = NewObject(this);

• switch(action)*

• {*

• case EContext_Menu_Actions::Use:*

•   button_text_widget->SetText(FText::FromString(TEXT("USE") ) );*
  

•   new_button_widget->OnClicked.AddDynamic(this, &UContext_Menu_Widget::On_Action_Use);*
  

•   break;*
  

• case EContext_Menu_Actions::Drop:*

•   button_text_widget->SetText(FText::FromString(TEXT("Drop") ) );*
  

•   new_button_widget->OnClicked.AddDynamic(this, &UContext_Menu_Widget::On_Action_Drop);*
  

•   break;*
  

• default:*

•   AsToolkit::Throw();*
  

• }*

• new_button_widget->AddChild(button_text_widget);*

• Action_List->AddChild(new_button_widget);*
  }
  //----------------------------------------------------------------------------------------------------
  void UContext_Menu_Widget::On_Action_Use()
  {

• UE_LOG(LogTemp, Log, TEXT(“Use Item!!!”) );*
  }
  //----------------------------------------------------------------------------------------------------
  void UContext_Menu_Widget::On_Action_Drop()
  {

• UE_LOG(LogTemp, Log, TEXT(“Drop Item!!!”) );*
  }
  //----------------------------------------------------------------------------------------------------

FReply UInventory_Item_Widget::NativeOnMouseButtonDown(const FGeometry &in_geometry, const FPointerEvent &in_mouse_event)
{

• FVector2D screen_mouse_pos;*

• FKey key = in_mouse_event.GetEffectingButton();*

• FReply reply = Super::NativeOnMouseButtonDown(in_geometry, in_mouse_event);*

• if (key == EKeys::LeftMouseButton)*

•   return reply.Handled().DetectDrag(TakeWidget(), EKeys::LeftMouseButton);*
  

• else*

•   if (key == EKeys::RightMouseButton)*
  

•   {*
  

•   	screen_mouse_pos = in_mouse_event.GetScreenSpacePosition();*
  

•   	Show_Item_Context_Menu(screen_mouse_pos);*
  

•   	return reply.Handled();*
  

•   }*
  

• return reply.Unhandled();*
  }
  //----------------------------------------------------------------------------------------------------
  void UInventory_Item_Widget::Show_Item_Context_Menu(FVector2D &screen_pos)
  {

• UContext_Menu_Widget context_menu_widget = CreateWidget<UContext_Menu_Widget>(GetWorld(), Context_Menu_Widget_Class);

• if (context_menu_widget == 0)*

•   AsToolkit::Throw();*
  

• context_menu_widget->Create_Action_Button(EContext_Menu_Actions::Drop);*

• context_menu_widget->Create_Action_Button(EContext_Menu_Actions::Use);*

• context_menu_widget->AddToViewport();*

• context_menu_widget->SetVisibility(ESlateVisibility::Visible);*

• context_menu_widget->SetPositionInViewport(screen_pos);*
  }
  //----------------------------------------------------------------------------------------------------