When the Zendesk component unmounts and then remounts, it no longer functions correctly.

[WilliamPriorielloGarda]

In componentDidMount(), you insert the Zendesk script which also defines window.zE.

In componentWillUnmount(), you don't remove the previously inserted Zendesk script and you also delete window.zE. Every time the component remounts, it inserts an additional Zendesk script and the old scripts still persist on the page.

In our experience, window.zE also does not work correctly after a remount.

The solution for us was to simply remove componentWillUnmount. We don't see a reason why we should delete window.zE manually whenever the Zendesk component unmounts. We can simply keep using same window.zE throughout the whole session.