Styles missing with custom fields panel active

[simom]

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

https://github.com/WordPress/gutenberg/assets/492145/04821108-99d9-4777-a6ea-20b1b54ad00a

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

[remkus]

Noticed the same thing just now, and I suspect this is related to the reset.css file. Was this file introduced with this edition or heavily altered?

[goodpenguins]

Noticed the same thing just now, and I suspect this is related to the reset.css file. Was this file introduced with this edition or heavily altered?

This reset.css is a standard part of the Gutenberg plugin build. It always loads. But in this case, for some reason it received higher priority than global styles.

[gyurmey2]

The issue returned when updating to 18.6.20240528. #61602 #61582