Autosave Form's settings object contains translatable values, but doesn't have a langcode property. This causes it to fail config validation in newer versions of Drupal, which you can see if you apply a recipe that includes Autosave Form. You'll get an error like this:
Schema errors for autosave_form.settings with the following errors: 0 [] The autosave_form.settings config object must specify a language code, because it contains translatable values.
Add langcode: en to the shipped config file.
Active
1.0
Code
A potential blocker for Drupal Starshot. More information: http://www.drupal.org/project/starshot
The issue might have been resolved, but I think the translation will not work if a simple language key is added to the configuration yml file. Attaching the screenshot of config export, run after enabling the language modules. It cleary says language specific config not exported.
I think we have to extend the ConfigTranslationFormBase.php to translate the configuration of other languages.
Might be wrong, any suggestions?