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The unexpected file deletions most commonly occur when full access mode is enabled and Codex runs without sandboxing protections, including without auto review enabled.
The bug is most prevalent in an unsafe configuration: full access mode with sandboxing and auto review both disabled. ✦ AI generated
Thibault Sottiaux · Simon Willison's Weblog · 2026-07-16 · original ↗
Full access mode is enabled and codex is run without sandboxing protections, including without auto review being enabled
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- ·Bug most common in one specific config
- ·Full access mode enabled
- ·No sandboxing protections active
- ·Auto review also disabled
- ·Full access mode = no sandbox
- ·Auto review turned off too
- ·Combination removes key safety layers
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