We've introduced a set of improvements to the way Next Generation Authoring handles validation. We've listened to your feedback and ensured that validation behaviour is now more closely aligned with the previous authoring experience, and added some improvements. A number of bugs have also been fixed.
Required fields
One of the key improvements is in the handling of required fields.
In the previous content authoring experience, any required fields that do not contain values were highlighted in red as soon as the content form was opened. In Next Generation Authoring required fields without a value are now highlighted only after the user clicks "Save", or when a value is entered in a field and then deleted.
Read more in the Next Generation Authoring- validation improvements release note.