OpenAI Codex Windows App Suffers Severe Memory Leak in Multi-Window Setup

karmay007 · x · 2026-09-01

Users report a critical memory leak in the OpenAI Codex (ChatGPT) desktop app for Windows (build 26.810.41047). Opening multiple top-level windows with long-history or tool-heavy threads causes a sharp increase in memory usage that fails to return to baseline. This leads to unresponsive menus, broken project switching, and system freezing, while multi-tasking within a single window remains stable. The issue is linked to window switching and renderer memory retention.

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