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codex - 💡(How to fix) Fix line in agent response got missing making me feel crazy [2 comments, 2 participants]

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openai/codex#18100•Fetched 2026-04-17 08:32:58
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Root Cause

Model said something about the searchIndex being rebuild. I was wondering, because that should happen in backend and we were talking about frontend, so I asked what it meant with "search index". It answered that the "search index build" happens in the backend. So I wanted to see the context again to understand why it had brought it up in the first place.

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What version of Codex CLI is running?

codex-cli 0.120.0

What subscription do you have?

Plus

Which model were you using?

gpt-5.4 (reasoning medium, summaries auto)

What platform is your computer?

Linux 6.12.77-1-MANJARO x86_64 unknown

What terminal emulator and version are you using (if applicable)?

foot version: 1.20.2 +pgo +ime +graphemes +toplevel-icon -assertions

What issue are you seeing?

Model said something about the searchIndex being rebuild. I was wondering, because that should happen in backend and we were talking about frontend, so I asked what it meant with "search index". It answered that the "search index build" happens in the backend. So I wanted to see the context again to understand why it had brought it up in the first place.

But it was gone from the conversation.

I thought: have I just imagined that? (Felt confused)

So I checked the session logs and there was a real discrepancy of what's in the logs and what the CLI was showing:

<img width="915" height="228" alt="Image" src="https://github.com/user-attachments/assets/1b4a9c6b-25c6-47ba-a12a-8ca777bf0bc4" /> <img width="958" height="241" alt="Image" src="https://github.com/user-attachments/assets/1ab97ce2-5974-4cb2-93fe-b62355dfebde" />

As you can see, one line (label 2) simply got missing in the CLI.

That was confusing.

What steps can reproduce the bug?

Setup random automatic conversations and always check whether previous messages change after continuing the conversation.

What is the expected behavior?

Previous messages should stay the same and no lines go missing when conversation continues.

Additional information

No response

extent analysis

TL;DR

The issue can be mitigated by closely monitoring conversation logs and comparing them with the CLI output to identify discrepancies.

Guidance

  • Verify the consistency of conversation logs and CLI output by regularly checking for missing lines or discrepancies.
  • When a discrepancy is found, try to reproduce the issue by setting up similar conversations and checking for changes in previous messages.
  • Investigate the possibility of a synchronization issue between the backend and frontend, as hinted by the mention of "search index build" happening in the backend.
  • Consider reporting the issue with more detailed logs and steps to reproduce, as the provided information might not be sufficient to identify the root cause.

Notes

The provided information suggests a potential issue with the Codex CLI's ability to display consistent conversation history, but the root cause is unclear. Further investigation and logging are necessary to determine the exact cause of the problem.

Recommendation

Apply workaround: closely monitor conversation logs and compare them with the CLI output to identify discrepancies, as the root cause of the issue is not immediately clear and may require further investigation.

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#autograd error#model save/load#optimization#mixed precision#training loop

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