1. In node /server/i18n/content, I have a configuration as in configuration.png picture
2. Create a custom content app with multiple language enable
3. Open the content app and add a new record, the observation in the observation.png picture
4. exptected result: the default language is selected as in expected.png picture.
Only version 5.3.9 has this bug, version 5.3.7 works well.