Keyphrase density highlighting does not work with latest Gutenberg

[Jordi-PV]

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• I've searched for any related issues and avoided creating a duplicate issue.

Please give us a description of what happened

When working with the newest Gutenberg version (17.3.0), the keyphrase density assessment does not highlight the found terms.

To Reproduce

Step-by-step reproduction instructions

1. Install and activate Yoast SEO
2. Install and activate Yoast SEO Premium
3. Install and activate Gutenberg version 17.3.0
4. Create a post.
5. Add some content (any content works, e.g. get a lorem ipsum from https://generator.lorem-ipsum.info/
6. Add a keyphrase (e.g. lorem)
7. Click the eye icon.

Expected results

1. The keyphrase is highlighted.

Actual results

1. The keyphrase is not highlighted.

Screenshots, screen recording, code snippet

Technical info

• If relevant, which editor is affected (or editors):

• Block Editor
• Gutenberg Editor (newest version)
• Elementor Editor
• Classic Editor
• Other:

• Which browser is affected (or browsers):

• Chrome
• Firefox
• Safari
• Other:

Used versions

• Device you are using: Mac
• Operating system: Mac
• PHP version: 7.4
• WordPress version: 6.4.2
• WordPress Theme: default
• Yoast SEO version: trunk
• Gutenberg plugin version: 17.3.0
• Elementor plugin version:
• Classic Editor plugin version:
• Relevant plugins in case of a bug:

[mhkuu]

Likely conflicting PR: WordPress/gutenberg#43204