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16th July 2026

On file deletions. We’ve investigated a handful of reports where GPT-5.6 unexpectedly deleted files.

What we have found is that this most commonly occurs when:

  • Full access mode is enabled and codex is run without sandboxing protections, including without auto review being enabled
  • The model attempts to override the $HOME env var to define a temporary directory.
  • The model makes an honest mistake and mistakenly deletes $HOME instead.

— Thibault Sottiaux, describing a pretty gnarly Codex bug