Cannot modify JWT to refresh access_token

[rhufsky]

Environment

  System:
    OS: macOS 15.1.1
    CPU: (8) arm64 Apple M1 Pro
    Memory: 176.09 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.12.0 - /opt/homebrew/opt/node@22/bin/node
    npm: 10.9.0 - /opt/homebrew/opt/node@22/bin/npm
    pnpm: 9.15.0 - /opt/homebrew/bin/pnpm
    bun: 1.1.40 - /opt/homebrew/bin/bun
  Browsers:
    Chrome: 131.0.6778.205
    Safari: 18.1.1
  npmPackages:
    next: 15.1.3 => 15.1.3 
    next-auth: ^5.0.0-beta.25 => 5.0.0-beta.25 
    react: ^19.0.0 => 19.0.0 

Reproduction URL

https://github.com/rhufsky/authdemo

Describe the issue

Cannot update JWT after initial creation at login time, shown by a simplified example. In the current state, it seems that I am unable to implement token refresh as described in https://authjs.dev/guides/refresh-token-rotation.

How to reproduce

Login and watch the jwt() callback. As a sample I create an arbitrary property status and set it to "INITIAL" at the first invocation of jwt().

When jwt() is invoked for a second time, it returns a token with status: "REFRESH".

The new value is never persisted, at the third invocation of jwt(), status is still "INITIAL".

    async jwt({ token, user, account, profile }) {
      console.log(token);
      if (account && profile && user) {
        console.log("INITIAL JWT");
        return {
          ...token,
          status: "INITIAL",
        };
      } else {
        console.log("SUBSQUENT JWT");

        return { ...token, status: "REFRESH" };
      }
    },

Expected behavior

After every invocation of jwt() the returned token should be persisted.