After using web login for GPT account successfully, then switching back to API token, 403 forbidden

What version of Codex is running?

v0.25.0

Which model were you using?

N/A

What platform is your computer?

Darwin 24.6.0 arm64 arm

What steps can reproduce the bug?

Run newer version of codex-cli

One time: accept to do the web-based GPT login

Next run: try to switch back to API token

Fails with 403 Forbidden

Workaround:
put at the top of your ~/.codex/config.toml

preferred_auth_method = "apikey"

Without the workaround, you cannot continue to use your API key (In my experience, up to and including v0.25.0

What is the expected behavior?

Allows to switch between web GPT login or using API key as desired

What do you see instead?

403 Forbidden on trying to use API key after once choosing GPT login option

Additional information

See workaround in description.