It's show “Approaching rate limits → Switch to gpt-5.1-codex-mini” but i already choose gpt-5.1-codex-mini

What version of Codex is running?

codex-cli 0.63.0

What subscription do you have?

Bussiness

Which model were you using?

gpt-5.1-codex-mini”

What platform is your computer?

Linux 6.14.0-36-generic x86_64 x86_64

What issue are you seeing?

Summary:
The ChatGPT UI unexpectedly switched my model to gpt-5.1-codex-mini medium without my action. At the same time, several UI elements behaved incorrectly, including corrupted metadata markers appearing in the output.

1. Unexpected Model Switch

I did not manually change the model.

The UI displayed this message at the top of the conversation:

“Model changed to gpt-5.1-codex-mini medium”

Immediately after, a popup appeared suggesting that I should switch to gpt-5.1-codex-mini, even though the UI already claimed I was switched.

This indicates an internal inconsistency:
The interface both claims the model was switched AND asks me to switch.

What steps can reproduce the bug?

1. Open a terminal and start Codex using the codex CLI inside a project directory:

``
peter@peter:~/Workspace/shop$ codex
``

1. Observe the session header showing the currently selected model (e.g., gpt-5.1-codex-max medium).
2. Begin a task by entering any normal request, for example:

``
help me check current project use tailwind v4 or v3
``

What is the expected behavior?

_No response_

Additional information

_No response_