Selenium driver.WindowHandles只返回一个忽略Firefox的标签 - 无法在多个标签之间导航

Question

Selenium driver.WindowHandles只返回一个忽略Firefox标签的句柄 无法在多个标签之间导航 请参阅以下代码 我遇到this问题并且答案解决了，但我的问题并不精确，然后再问我 回应帮助了我，但现在我仍然坚持这个问题的问题，另一个人也有here但没有答案的问题。
还有一个甚至是单独的窗口，但在chrome here中。

//-------------------------------------------------
        public static void testab()
        {
            IWebDriver driver = new FirefoxDriver();
            driver.Navigate().GoToUrl("https://www.google.com/ncr");
            IWebElement elmTxt = driver.FindElement(By.CssSelector("input#lst-ib"));
            elmTxt.SendKeys("google" + Keys.Enter);
            IWebElement elmQtdRes = driver.FindElement(By.CssSelector("div#resultStats"));
            string strWebStat = elmQtdRes.Text;
            IWebElement elmNewsLnk = driver.FindElement(By.CssSelector("a[href*='tbm=nws']"));
            elmNewsLnk.SendKeys(Keys.Control + Keys.Return);
            IWebElement elmBdy = driver.FindElement(By.CssSelector("body"));
            elmBdy.SendKeys(Keys.Control + "2");
            //-------------------------------------------------
            driver = switchLastOpenedTab(driver); // works
            elmQtdRes = driver.FindElement(By.CssSelector("div#resultStats"));
            string strNewStatV1 = elmQtdRes.Text;
            Console.WriteLine("Stat for NEWS(V1):[" + strNewStatV1 + "]");
            Console.WriteLine("Stat for WEB:[" + strWebStat + "]");
            //-------------------------------------------------
            driver = switchTabByIndex(driver, 2);  // throw an Exception
            elmQtdRes = driver.FindElement(By.CssSelector("div#resultStats"));
            string strNewStatV2 = elmQtdRes.Text;
            Console.WriteLine("Stat for NEWS(V2):[" + strNewStatV2 + "]");
        }
        //-------------------------------------------------
        public static IWebDriver switchTabByIndex(IWebDriver driver, int tabIndex){
            // it dont get a list of tabs just the windows container
            List<String> winTabs = new List<String>(driver.WindowHandles);
            int idx = tabIndex - 1;
            // because of comment above count here equal one
            if (idx >= winTabs.Count) {
                throw new Exception("This method dont work!!");
            }
            driver.SwitchTo().Window(winTabs[idx]);
            return driver;
        }
        //-------------------------------------------------
        public static IWebDriver switchLastOpenedTab(IWebDriver driver)
        {
            // it works but cant handle more than one new tab, cant navigate
            driver.SwitchTo().Window(driver.WindowHandles.Last());
            return driver;
        }
        //-------------------------------------------------