Bug report : Incorrect file-creation confirmation when generated CSV was not actually created

I re-read it and could not formulate it better (formulated in Codex app after encountering the bug in Codex app) , here is the issue that make my hair dressed :

Observed Issue

The agent claimed it had created the files:

bordereaux_envois_gmail_MASTER_COMPLET.csv
and later
MASTER_COMPLET.csv

However, the user could not find either file in the working directory. Internal shell commands returned success codes, but directory listing output was empty or not usable. The agent then incorrectly concluded that the file existed, instead of verifying it in a way that was actually observable by the user.

Nature of the Problem

There are two possible causes:

  1. Codex environment bug: shell commands may return success even though the file is not visible or not actually persisted in the user-accessible workspace.

  2. Agent error: the agent trusted an insufficient internal signal, such as exit code 0, and claimed the file existed without robust proof.

From the user’s perspective, the result is the same: the announced file does not exist or cannot be accessed.

Impact

The user requested a single CSV file containing all extracted data. The agent responded as if the deliverable had been generated, but no usable file was actually provided. This creates a false confirmation of task completion.

Expected Behavior

When an agent creates a file, it should:

  • actually create the file in the visible workspace;

  • verify its presence with a reliable directory listing;

  • provide an accessible link or exact path;

  • avoid claiming success if verification is ambiguous or if shell output is empty