phantomJSで'Element is not currently visible and may not be manipulated'エラーが出る

環境

CentOS Linux release 7.4.1708 (Core)
python 3.4.3
phantomjs 2.1.1
selenium 3.5.0

code

driver = webdriver.PhantomJS(service_log_path=os.path.devnull)
driver.get(some_url)
buttons = driver.find_elements_by_css_selector(some_css_selector)
for button in buttons:
    button.click()

症状

click()のタイミングでこんなのが出てくる。

selenium.common.exceptions.ElementNotVisibleException: Message: {"errorMessage":"Element is not currently visible and may not be manipulated","request":{"headers":{"Accept":"application/json","Accept-Encoding":"identity","Connection":"close","Content-Length":"81","Content-Type":"application/json;charset=UTF-8","Host":"xxx.xxx.xxx.xxx:xxxxx","User-Agent":"Python http auth"},"httpVersion":"1.1","method":"POST","post":"{\"id\": \":wdc:1511762011951\", \"sessionId\": \"4ba89190-d337-11e7-819f-c929cfc19434\"}","url":"/click","urlParsed":{"anchor":"","query":"","file":"click","directory":"/","path":"/click","relative":"/click","port":"","host":"","password":"","user":"","userInfo":"","authority":"","protocol":"","source":"/click","queryKey":{},"chunks":["click"]},"urlOriginal":"/session/4ba89190-d337-11e7-819f-c929cfc19434/element/:wdc:1511762011951/click"}}
Screenshot: available via screen

対症療法

ブラウザサイズを指定する

driver = webdriver.PhantomJS(service_log_path=os.path.devnull)
driver.set_window_size(1350, 640)  # <----　ここ
driver.get(some_url)
buttons = driver.find_elements_by_css_selector(some_css_selector)
for button in buttons:
    button.click()

結果

エラーが起こらなくなった。
めでたしめでたし。

参考URL