Firefox move_to_element bug

test.py

from __future__ import print_function

import time

from selenium import webdriver
from selenium.webdriver.common.action_chains import ActionChains

driver = webdriver.Firefox()
driver.get('https://github.com/robotframework/SeleniumLibrary')
xpath = '//*[@id="user-content-history"]'
while not driver.find_elements_by_xpath(xpath):
    print('Sleep 1')
    time.sleep(1)
element = driver.find_element_by_xpath(xpath)
ActionChains(driver).move_to_element(element).perform()
time.sleep(5)
driver.quit()