The model insisted it got the algorithm right but only after forcing it to read it fully did it correct itself

What version of Codex is running?

codex-cli 0.64.0-alpha.9

What subscription do you have?

Pro

Which model were you using?

gpt-5.1-codex-max xhigh

What platform is your computer?

_No response_

What issue are you seeing?

I asked the model to give me examples of how a simple string matching algorithm works. It read the file and gave wrong examples. After several corrections, it still produced the wrong example. I forced it to re-read the code again and then it got it right.

What steps can reproduce the bug?

Uploaded thread: 019ac46d-9d80-7e42-95a2-ebbb8d35ecad

What is the expected behavior?

_No response_

Additional information

_No response_