Localized Label for Slate RichText is missing

[MarvinVrdoljak]

Describe the Bug

The Localized Label for the Slate RichText is missing.

Link to the code that reproduces this issue

https://github.com/MarvinVrdoljak/payload-bug-report-2/tree/slate-js-missing-localized-label

Reproduction Steps

The pages collection is located at:
/home/marvin/websites/payload-bug-report-2/src/collections/Pages/index.ts
It contains two new slate richtext fields: one localized, one not. Neither of them is showing the "- en" localized label on the payload frontend:

The title is working fine.

Which area(s) are affected? (Select all that apply)

area: ui

Environment Info

Binaries:
  Node: 22.14.0
  npm: 10.9.2
  Yarn: N/A
  pnpm: 10.10.0
Relevant Packages:
  payload: 3.37.0
  next: 15.3.0
  @payloadcms/db-mongodb: 3.37.0
  @payloadcms/email-nodemailer: 3.33.0
  @payloadcms/graphql: 3.33.0
  @payloadcms/live-preview: 3.33.0
  @payloadcms/live-preview-react: 3.37.0
  @payloadcms/next/utilities: 3.37.0
  @payloadcms/payload-cloud: 3.37.0
  @payloadcms/plugin-form-builder: 3.37.0
  @payloadcms/plugin-nested-docs: 3.37.0
  @payloadcms/plugin-redirects: 3.37.0
  @payloadcms/plugin-search: 3.37.0
  @payloadcms/plugin-seo: 3.37.0
  @payloadcms/richtext-lexical: 3.37.0
  @payloadcms/richtext-slate: 3.37.0
  @payloadcms/translations: 3.33.0
  @payloadcms/ui/shared: 3.37.0
  react: 19.1.0
  react-dom: 19.1.0
Operating System:
  Platform: linux
  Arch: x64
  Version: #1 SMP Tue Nov 5 00:21:55 UTC 2024
  Available memory (MB): 15672
  Available CPU cores: 22