JS error in embedded Excel browser

[phavekes]

This issue is imported from pivotal - Originaly created at Jun 29, 2021 by Thijs Kinkhorst

The spinner page (apparently since the redesign) produces this error in an Excel built-in browser window (see screenshot).

It is pretty concrete that it is about the double arrow in this HTML:

    <script>
        window.addEventListener(\'load\', () => {
            document.querySelector(\'.hideNoJS\').classList.remove(\'hideNoJS\');
        });
    </script>

Is there an idea what could cause this and is this something we can fix?

I have asked the customer whether they can reproduce it on SURFconext TEST so we have an environment to verify a potential fix on .

[phavekes]

(Thijs Kinkhorst - Jun 29, 2021)