MailChimp Integration: The integration can't be re-added if there was an integration before

When we remove the MailChimp integration and try to re-integrate, the API key gets stuck to the rendered screen. One needs to refresh the page to do a re-integration.

After removing the integration, select the integration and you will see the the api key input field can't be used, and after selecting a list, the complete integration button can't be activated.