Some messages output gibberish

What version of Codex CLI is running?

codex-cli 0.118.0

What subscription do you have?

Plus

Which model were you using?

5.4

What platform is your computer?

Darwin 25.4.0 arm64 arm

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

iTerm2

What issue are you seeing?

The agent will be fine and then suddenly will switch to gibberish for a few messages. It seems to recover after I send another message. It has happened 3-4 times today. Sometimes includes random characters from other scripts (Chinese, Arabic, etc.) interspersed through the output.

What steps can reproduce the bug?

Uploaded thread: 019d5529-41aa-7142-b080-dfd7fdd91ec2

What is the expected behavior?

_No response_

Additional information

Examples:
1.

• Searching the web • Searched • Called codex_apps.github_add_reaction_to_issue_comment({}) └ Error: user cancelled MCP tool call ──────────────────── • The wrapper staytempsno trunc on—with_ni VEG identity whatsoever. I chased pre55 now: the RAP marker decoded internally, not directional. Forecast “on_step that 90 more characters” appears upstream-ish /://. So it “platform style gesture” rather than us subtracting—our new Botanical `_proxy notС text. So: no formatting beyond split-lines/strip in this trims- _emitcu. The exact q-phrase * pre/post longer: would move insofar. It's likely once browser rather.

1. When asked about which GitHub issue it tried to react to:

• Ias, no infoman neither content report interaction orgdin in this session. The computer based read simply shoes twogi.

(Later probing showed it had made the tool call with no arguments)