Alert is unexpectedly closed by 'class PageLoaded implements ExpectedCondition<Boolean>'

[cyberspaceru]

Hi, I got some issue when I try to use AbstractPageElement.redirectTo with an opened alert on a page.
It happens because of PageLoaded.class which try to get a state of the page by JavaScript.
JavaScript will close the alert.

I suggest a solution, before using PageLoaded.class just check is an alert opened or not, for example, by this method:

   public static boolean alertIsPresent() {
        try {
            WebDriverWait wait = new WebDriverWait(getWebDriver(), 0);
            return wait.until(ExpectedConditions.alertIsPresent()) != null;
        } catch (TimeoutException e) {
            return false;
        }
    }

[cyberspaceru]

alertIsPresent() || "complete".equals(executeScript(String.class, "return document.readyState"))