Codex loses chat history when switching between tmux and non-tmux session

Resolved 💬 2 comments Opened Feb 11, 2026 by jiaxi98 Closed Feb 14, 2026

What version of Codex CLI is running?

codex-cli 0.98.0

What subscription do you have?

Pro

Which model were you using?

gpt-5.3-codex xhigh

What platform is your computer?

Linux 5.15.0-168-generic x86_64 x86_64

What terminal emulator and version are you using (if applicable)?

_No response_

What issue are you seeing?

I have run a session under tmux (use codex inside a tmux session) an hour ago. Then I quit this session in
tmux and resume this session outside the tmux to continue the work.
After working for a while, I quit the session and resume again in the same terminal (not inside a tmux session), all the chat history after I quit from the tmux codex session disappear. In other word, after I resume, I return back to the point when I left the tmux codex session.

I am wondering whether switching from codex session in tmux and not will cause such history loss. I also encounter this when I previously use Claude Code.

What steps can reproduce the bug?

Thread 019bd967-990a-70a0-baf8-decedb625940

What is the expected behavior?

_No response_

Additional information

_No response_

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