Codex CLI composer background intermittently missing over SSH due to 100 ms OSC 10/11 probe timeout

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#35,309 opened on Jul 25, 2026 1 comment 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 48/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Quiet
Tech stack: rust
Domain: cli

Research direction

Start by reproducing Codex CLI v0.145.0 over SSH on Linux with iTerm2 and observe the OSC 10/11 color probe near the 100 ms deadline. Trace the probe's timeout handling and verify that composer shading remains present when the probe completes around 97 ms.

Written by the indexing model from the issue text.

Description

bug CLI remote TUI

What version of Codex CLI is running?

v0.145.0

What subscription do you have?

Pro

Which model were you using?

got 5.6 sol

What platform is your computer?

Linux 5.14.0-687.24.1.el9_8.x86_64 x86_64 x86_64

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

iTerm2

Codex doctor report

What issue are you seeing?

Codex CLI 0.145.0 over SSH: OSC color probe completes around 97 ms; the 100 ms deadline intermittently causes default_colors=false and removes composer shading.

What steps can reproduce the bug?

Uploaded thread: 019f9829-97b2-7752-a71c-9c8c5c1eacdd

What is the expected behavior?

No response

Additional information