Axe-core timeout/not responding when analysing an certain webpage.

[Danidude]

When running axe-core in both Firefox and Chrome I do not get the page analysed, however both Firefox and Chrome behaves differently when trying to analyse the webpage.

Firefox: Just an spinning wheel of death and no response on what is happening. After an few seconds the browser message of an script taking to long pops up and asks to terminate the script. In the end axe-core never finish analysing the webpage.

Chrome: Spinning wheel of death for an long time. Then ends in this message:
Error: Axe in frame timed out: iframe[height="\36 90px"] at err (chrome-extension://lhdoppojpmngadmnindnejefpokejbdd/adapter.bundle.js:37052:12) at chrome-extension://lhdoppojpmngadmnindnejefpokejbdd/adapter.bundle.js:37075:16

Webpage tested: https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/articles/doesoursexaffectwhatwediefrom/2016-07-13

For both browsers:
axe-core version: 3.1.1
axe-webdriver, extension or other integration version: 3.5.2

Chrome version: 69.0.3497.100 (Official Build) (64-bit)
Firefox version: 62.0.3 (64-bit)

For Tooling issues:
- Node version: v10.12.0
- Platform:  Ubuntu 18:04