Steps to reproduce

1. Create a new story in https://demo.magnolia-cms.com/ without adding a block and save
2. Add a new block to the story created above and save changes
3. Close the tab where the story is opened
4. Edit the story.
5. Buttons Save and Save and publish are disabled

Expected results

The buttons Save and Save and publish are enabled and it is possible to save changes.

Actual results

It appears the following warning:

Since version 2.1 of the Content Editor module, the blocks in the Stories app can handle internationalized content. The current block structure is incompatible with the i18n configuration of the 'blocks' field in the app. Please ask your developer to set 'i18n: false' for the field.

And buttons Save and Save and publish are disabled

Workaround

Create the node blocks inside the story

Development notes

It seems that node blocks is not added when stories are created - at least on version 2.1.3-