Selenium FluentWait未按预期工作问题排查

问题场景 #

需要等待页面上id为MX的元素，采用FluentWait实现时出现报错，但改用WebDriverWait却能正常运行，希望找到适配PageObject模式的简洁写法，并明确两种等待方式的差异原因。

FluentWait报错代码 #

FluentWait<WebDriver> fluentWait = new FluentWait<>(driver)
    .withTimeout(Duration.ofSeconds(30))
    .pollingEvery(Duration.ofMillis(200))
    .ignoring(NoSuchElementException.class);

WebElement countryMx = initCountry.getMx();
fluentWait.until(d -> ExpectedConditions.visibilityOf(countryMx));
System.out.println("Element MX should be visible by now");
fluentWait.until(d -> ExpectedConditions.elementToBeClickable(countryMx));
System.out.println("Element MX should be clickable by now");

do {
    executor.executeScript("arguments[0].scrollIntoView(true);", countryMx);
} while (!countryMx.isDisplayed());
countryMx.click();

报错信息 #

org.openqa.selenium.NoSuchElementException: no such element: Unable to locate element: {"method":"css selector","selector":"#MX"}

WebDriverWait正常运行代码 #

WebDriverWait wait = new WebDriverWait(driver, Duration.ofSeconds(1));
wait.until(ExpectedConditions.presenceOfElementLocated(By.id("MX")));

WebElement countryMx = initCountry.getMx();

do {
    executor.executeScript("arguments[0].scrollIntoView(true);", countryMx);
} while (!countryMx.isDisplayed());
countryMx.click();

额外尝试的错误写法 #

即使直接在FluentWait中等待元素存在，依然在executeScript()处失败：

fluentWait.until(d -> ExpectedConditions.presenceOfElementLocated(By.id("MX")));

疑问与需求 #

认为FluentWait与WebDriverWait的行为应该等价，希望找到适配PageObject模式的简洁写法，解决当前FluentWait的报错问题。

内容的提问来源于stack exchange，提问作者Greco