Description

With the latest version of Gutenberg, 18.3.0, and the custom fields panel active, the CSS style is no longer rendered.

Step-by-step reproduction instructions

1. Edit a page/post
2. From the preferences panel enable the custom fields and save

Screenshots, screen recording, code snippet

Environment info

• WordPress 6.5.3
• Gutenberg 18.3.0

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes