[BUG] Status line disappears after assistant response and does not re-render

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

The status line renders correctly on session startup, but disappears permanently after the first assistant response completes. It does not re-render on subsequent turns.
The only way to see it again is to restart Claude Code.

What Should Happen?

The status line should persist and update after every assistant message completes, as described in the documentation. The 300ms debounced update mechanism should fire
after each response.

Error Messages/Logs

No error output. The status line silently stops rendering — no crash, no log.

Steps to Reproduce

1. Configure a command-type status line in ~/.claude/settings.json:

{
"statusLine": {
"type": "command",
"command": "bash ~/.claude/statusline-command.sh"
}
}

1. Start a Claude Code session — status line appears correctly in the terminal
2. Send any prompt and wait for the full response to complete
3. Observe: status line is gone after the response renders
4. Send additional prompts — status line never re-renders for the rest of the session

Note: Running the script manually produces correct output. The issue is in the
Claude Code runtime not triggering re-renders after message completion.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

first time configuring status line on this installation

Claude Code Version

2.1.84 (Claude Code)

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Other

Additional Information

• disableAllHooks is NOT set — hooks are enabled
• The status line script executes correctly when run manually with bash ~/.claude/statusline-command.sh
• The script reads JSON from stdin and outputs ANSI-formatted text — verified working
• Reinstalling Claude Code does not resolve the issue

Related issues that may be tracking the same root cause:

• #29383 — Status line briefly appears during thinking phase then disappears
• #25539 — Status line stuck after response completes

Configuration summary:

• Type: command
• Script: reads model, cwd, git branch, context window usage from stdin JSON
• Output: ANSI colored single-line string