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[Bug] Thinking Effort Selector Shows Only "6" and Previous Messages Disappear #53404

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[Bug] Thinking Effort Selector Shows Only "6" and Previous Messages Disappear#53404
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appIssues related to the Codex desktop appbugSomething isn't workingsessionIssues involving session (thread) management, resuming, forking, naming, archiving

Description

@TechGenDM
TechGenDM
opened on Oct 12, 2026

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

26.1007.30912

What subscription do you have?

ChatGPT Go

What platform is your computer?

Darwin 27.0.0 arm64 arm

What issue are you seeing?

I am experiencing two persistent UI issues in the ChatGPT macOS desktop app.

BUG 1: Thinking-effort selector
The selector displays only the number "6". I cannot find or select other thinking-effort levels. The interface does not explain what this number represents.

BUG 2: Previous messages disappearing
After I send a new message, earlier messages sometimes disappear from the visible conversation. This disrupts the conversation flow and makes the desktop app difficult to use.

Both issues have persisted for approximately 2–3 months.

I have been using ChatGPT through Chrome as a workaround because the desktop experience is unreliable.

Feedback ID: cd01dad9-f1df-4e86-b4a1-61ac7c1250d5

What steps can reproduce the bug?

Feedback ID: cd01dad9-f1df-4e86-b4a1-61ac7c1250d5

What is the expected behavior?

BUG 1:

  1. Open the macOS desktop app.
  2. Start a new conversation.
  3. Open the thinking-effort selector.
  4. Observe that only "6" is displayed and no alternative levels are available.

BUG 2:

  1. Open an existing conversation.
  2. Send a message and wait for the response.
  3. Send another message.
  4. Observe whether earlier messages disappear from the visible conversation.

The second issue occurs intermittently. Both issues have persisted across multiple months.

  1. The thinking-effort selector should clearly communicate the selected setting and provide the available options supported by the selected model.

  2. Previous messages should remain visible and accessible when new messages are sent.

  3. The desktop app should provide a consistent, reliable experience comparable to the web application.

Additional information

Device: MacBook Air M4, 24 GB RAM
Operating system: macOS (exact version to be provided)
Subscription: ChatGPT Go
Duration: Approximately 2–3 months

I have attached screenshots showing the thinking-effort selector and the affected interface.

In-app feedback ID:
cd01dad9-f1df-4e86-b4a1-61ac7c1250d5

Please investigate both issues and route them to the appropriate desktop engineering team.

Image Image Image

Activity

  1. TechGenDM
    added
    appIssues related to the Codex desktop app
    on Oct 12, 2026
  2. github-actions
    added
    bugSomething isn't working
    sessionIssues involving session (thread) management, resuming, forking, naming, archiving
    on Oct 12, 2026

  3. github-actions commented on Oct 12, 2026

    @github-actions
    github-actionsBot
    on Oct 12, 2026 – with GitHub Actions
    Contributor

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

    Powered by Codex Action

  4. TechGenDM commented on Oct 12, 2026

    @TechGenDM
    TechGenDM
    on Oct 12, 2026
    Author

    Thanks for flagging these potential duplicates. I've reviewed the linked reports.

    My report includes two symptoms:

    1. The thinking-effort selector displays only 6, with no alternative selectable levels.
    2. Earlier messages disappear from the visible conversation after I send a subsequent message.

    I understand that other reports describe disappearing responses, but I haven't found one documenting the specific thinking-effort selector issue. The exact trigger for my message-disappearance issue may also differ.

    Please review the selector issue separately and determine whether the message-rendering symptom should be linked to an existing report.

    Feedback ID: cd01dad9-f1df-4e86-b4a1-61ac7c1250d5

  5. stillsever commented on Oct 16, 2026

    @stillsever
    stillsever
    on Oct 16, 2026

    My sister is experiencing the same selector symptom on Windows 11 with a ChatGPT Go account.

    In Chat mode, the selector displays only “6”, with no selectable reasoning-effort levels. She first noticed this on 11 October 2026 and reported that the model and effort options had been available the previous day.

    We reinstalled the app on 11 October and have now updated it again on 16 October. The selector issue persists after updating. I’ve attached a screenshot and included the current version below.

    The same account offers a “Think” button on the website. The desktop app’s Work mode still provides working model and reasoning controls, so she is using Work as a workaround.

    I’m corroborating the selector issue only; I haven’t confirmed the disappearing-message symptom.

    The previous version was OpenAI.Codex 26.1007.9446.0, after the update it is OpenAI.Codex 26.1013.3656.0.

    Image

  6. stillsever commented on Oct 19, 2026

    @stillsever
    stillsever
    on Oct 19, 2026

    The account reproduces the same symptoms on a different Windows device. Updating did not resolve it.

    Version now is OpenAI.Codex 26.1013.4894.0.

    In-app feedback ID: no-active-thread-01a15419-caf5-71b0-8abd-ef3465bdee07

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