Description

In the mobile layout, when you scroll the list (Navigation, Pattern Category), you expect the header (site hub icon, screen title, etc.) to stay still and the description below to scroll. However, when you scroll the list, the site hub icon, screen title, etc. scroll at the same time.

This issue does not occur in WordPress 6.7.

Perhaps this issue will be resolved by #68165.

Step-by-step reproduction instructions

• Appearance > Editor > Pattern
• Scroll the pattern category list.

Screenshots, screen recording, code snippet

✅ WordPress 6.7

❌ Latest Gutenberg

Environment info

No response

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

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure