• slug
• yoast_wpseo_metadesc
• yoast_wpseo_title

There would be a follow up PR to cleanup the side effects.

Add defensive code

• packages/js/src/analysis/PostDataCollector.js

Remove event listener to hidden fields input and refresh app with the subscribe.

• packages/js/src/initializers/post-scraper.js
• packages/js/src/initializers/term-scraper.js

Add seo title and description to block editor sync and hidden fields sync

• packages/js/src/helpers/fields/blockEditorSync.js
• packages/js/src/helpers/fields/hiddenFieldsSync.js

Remove load

• packages/js/src/elementor/containers/SnippetEditor.js
• packages/js/src/elementor/containers/ElementorFill.js
• packages/js/src/elementor/components/fills/ElementorFill.js
• packages/js/src/redux/reducers/snippetEditor.js
• packages/js/src/redux/selectors/snippetEditor.js

Add initial state

• packages/js/src/redux/initial-state/snippetEditor.js
• packages/js/src/redux/initial-state/index.js

Remove unused files

• packages/js/src/helpers/fields/SearchMetadataFields.js
• packages/js/src/elementor/redux/actions/snippetEditor.js

Test instructions:

• Without premium or other Yoast add-ons:
• Edit a post.
• Go to Google preview
• Change title, description and slug, try also with replacement variables
• Save and refresh, check it is saved

Repeat the tests for

• The term editor
• The elementor editor
• The classic editor

Test without metabox

• Comment out line 81 in class-metabox.php:

// add_action( 'add_meta_boxes', [ $this, 'add_meta_box' ] );

• Edit a post.
• Go to Google preview
• Change title, description and slug, try also with replacement variables
• Save and refresh, check it is saved.