Selenium int - how can I wait an element (or the entire page) is loaded

Hi
I am using this code to see if my element is fully loaded

driver.get(\"history.html\");
WebDriverWait wait = new WebDriverWait(driver, 30);
WebElement element = wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath(\"//button[@class=\\\"o-B o-BIntro\\\"]\")));
driver.stopTransaction();

With the classi driver it waits that the element is loaded, but not with NL driver

Any idea/Workaround ?
Thanks and regards
Laurent