Description

Adding ampersands '&' to the label field of a link (page & custom) in the Navigation block converts it to u0026, which displays on the frontend and backend once refreshed.

Step-by-step reproduction instructions

1. Go to the latest 6.5-beta3 (or nightly) on your test site, or in playground: https://playground.wordpress.net/?php=8.0&wp=beta&storage=none
2. Edit site, and add a link to the navigation block.
3. Include an ampersand in the label of a link in the block, an example being 'News & Events'
4. View the frontend of the site and see it converted to 'u0026'

Screenshots, screen recording, code snippet

Environment info

• WordPress 6.5 beta3 & Nightly
• Tested and seen with both Gutenberg not installed, and installed and activated.
• Tested in both latest Chrome & Firefox

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