Webform Auto Exports settings issue

[jekuaitk]

We have encountered an issue with saving initial Automatic CSV Export settings.

The browser console reports the following:

An invalid form control with name='email_body[value]' is not focusable.

An issue has been created 3531004 in which the behaviour is described. The created issue also refers to what i believe is the underlying drupal core issue responsible. Furthermore, the issue also contains a possible work-around although it comes with a cost of some requiredness not working.