`beforeValidate` hook runs, but doesn't update UI during `update` operation

[yulolimum]

Describe the Bug

Hello, this originally was observed with the example app's "slug" field. However this was reproduced on a fresh payload app.

Setting up a beforeValidate hook to transform a field value works on both create and update. But...

During create the transformation is immediately available in the UI. I suspect due to the page path going from /create -> /{resource_id}

During update the transformation runs, butis not reflected in the UI.

Here is a video demoing the issue:

• In the first part, you will see the field changes correctly during create.
• In the second part (update), you will see the field will only change after a page refresh.

https://github.com/user-attachments/assets/e8f0d17a-e8ed-441e-ad7a-2ff96cb1612d

Link to the code that reproduces this issue

https://github.com/yulolimum/tmp-payload-before-validate-repro

Reproduction Steps

1. Clone Repo

   git clone git@github.com:yulolimum/tmp-payload-before-validate-repro.git

2. Install Deps

   cd tmp-payload-before-validate-repro
   yarn

3. Start Dev Server

   yarn dev

4. Login

   • user: repro@payload.com
   • pass: repro

5. Create a New User

   • After filling out the field "Demo Field" with any text and clicking "Save", the field should change to "you should see this".

6. Update the User

   • Change the "Demo Field" to any text and click "Save". Observe - field remains with the same text you typed.

7. Refresh the Page

   • After refreshing the page, the field should change to "you should see this".

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

area: core

Environment Info

Binaries:
  Node: 22.11.0
  npm: 10.9.0
  Yarn: 4.5.2
  pnpm: N/A
Relevant Packages:
  payload: 3.0.2
  next: 15.0.3
  @payloadcms/db-mongodb: 3.0.2
  @payloadcms/email-nodemailer: 3.0.2
  @payloadcms/graphql: 3.0.2
  @payloadcms/next/utilities: 3.0.2
  @payloadcms/plugin-seo: 3.0.2
  @payloadcms/richtext-lexical: 3.0.2
  @payloadcms/translations: 3.0.2
  @payloadcms/ui/shared: 3.0.2
  react: 19.0.0-rc-65a56d0e-20241020
  react-dom: 19.0.0-rc-65a56d0e-20241020
Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 23.1.0: Mon Oct  9 21:27:24 PDT 2023; root:xnu-10002.41.9~6/RELEASE_ARM64_T6000
  Available memory (MB): 65536
  Available CPU cores: 10