PhantomJS does not see dropdown options populated by AJAX

I've been trying to scrape a site using a PhantomJS/Selenium setup in Python.

There's a dropdown in the page that, when selected, populates the options of another dropdown. When I'm automating this with Firefox, when I select_by_visible_text on the first dropdown, the second one gets populated.

However, the same code doesn't work with PhantomJS.

browser = webdriver.PhantomJS(executable_path=PHANTOMJS_PATH)
## browser = webdriver.Firefox()
wait = WebDriverWait(browser, WAIT_TIME)


def condition_wait_for_dropdown(driver):
    ret = False
    if driver.find_elements_by_xpath('//*[@id="DropDown1"]/option'):
        ret = True
    return ret


I have tried using a hard-coded sleep instead of the custom waiting condition, and checked the DOM - the second dropdown never gets populated at all.

Can this be a problem with the webpage itself? If so, how do I work around this?

EDIT: Just to clarify, this works with Selenium+Firefox, so the possibility exists that this is a bug in the PJS driver itself.


I found a fix for this, so best to leave it here for posterity.

I had an input field in the page form, so after selecting the first dropdown I moved the focus to the input field, and sent an ENTER to it. The second dropdown got loaded immediately.

Still don't know wth is wrong with this web page.

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