Desktop app model selector briefly shows Custom when opening conversations

[GGBondBlueWhale]

What version of the Codex App are you using (From “About Codex” dialog)?

Version 26.422.21637 (2056)

What subscription do you have?

Pro

What platform is your computer?

macOS

What issue are you seeing?

When I open a new conversation, or open an existing/old conversation, the model selector initially shows Custom instead of the actual selected model.

After waiting for a short time, the selector changes back to the currently selected model, for example 5.5 Extra High.

This is confusing because it looks like the model setting has been reset or lost. It is also unclear what model/configuration will actually be used if I send a prompt while the selector is still showing Custom.

What steps can reproduce the bug?

1. Open the Codex desktop app.
2. Select a model, for example 5.5 Extra High.
3. Start a new conversation, or open an existing/old conversation.
4. Look at the model selector immediately after the conversation loads.
5. The selector temporarily shows Custom.
6. After waiting for a short time, it changes back to the actual selected model, such as 5.5 Extra High.

What is the expected behavior?

The model selector should immediately show the actual selected model when a new or existing conversation is opened.

For example, if the selected model is 5.5 Extra High, it should display 5.5 Extra High right away and should not temporarily display Custom unless the conversation is actually using a custom configuration.

Additional information

Permission mode shown in the UI: Full access.

I can provide screenshots showing:

• The app version: 26.422.21637 (2056)
• The selector temporarily showing Custom
• The selector later showing 5.5 Extra High

[github-actions]

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

• remote connection displays gpt5.5 as custom model #19203
• New conversation ignores selected model and starts as GPT-5.4 #17933

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[GGBondBlueWhale]

Still happed today...