Pause a game when a button is clicked in a second window

Development Programming & Scripting UI
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1

I need to create, fundamentally, a separate window in which there will be a widget with buttons (something like a control panel).
I create the second separate window SWindow in which I place the widget. When you press a button on the widget, the game stops, when button it is released - game continues. If this widget is placed in the main window, this does not happen. Is it possible to overcome it? And what can it be connected with?

	MyWidgetWindow = SNew(SWindow)
		.Title(NSLOCTEXT("OperatorPanel", "WindowTitle", "OperatorPanel"))
		.AutoCenter(AutoCenterType)
		.ScreenPosition(FVector2D(1310, 10))
		.ClientSize(FVector2D(600, 990))		
		.IsTopmostWindow(false)
		.SupportsMinimize(false).SupportsMaximize(false)
		.FocusWhenFirstShown(true)		
		.SaneWindowPlacement(AutoCenterType == EAutoCenter::None)		
		.UseOSWindowBorder(true)
		.SizingRule(ESizingRule::FixedSize)
		.HasCloseButton(false);

	UUserWidget* LoadingWidget = CreateWidget<UUserWidget>(GetWorld(), wLoading);
	TSharedRef<SWidget> loadswidget = LoadingWidget->TakeWidget();

	MyWidgetWindow->SetContent(loadswidget);
	   
	TSharedPtr< SWindow > ParentWindow = GEngine->GameViewport->GetWindow();

	if (!MyWidgetWindow->GetNativeWindow().IsValid()) {
		FSlateApplication::Get().AddWindow(MyWidgetWindow.ToSharedRef());		
	}

	MyWidgetWindow->ShowWindow();
2

I excusal. The problem was only when you run through the “PLAY”. If run through the “LAUNCH” then neither does not freeze and does not stopped