Yoast SEO was updated to version 4.0.2, from version 4.0. Changelogs:
4.0.2
- Fixes a bug where shortcodes would be kept in the content that would be analyzed, which would result in incorrect results.
- Fixes a bug where the user language would be used to analyze the content instead of the site language.
4.0.1
- No Changelog was available.