Translate node: hide non-translatable form elements OR make it more obvious.
Created by: ekes
Elements can't all be hidden if they are not translatable. Problematic ones presently include: date (the repeat date needs to check if you want to update all events or just one); captcha (if you haven't verified yet you need to show you're not a spam bot).
Options edit the default hide to be less severe and cause no validation errors; or just make it obvious which fields are translatable and which will change the value in all translations.