[BUG] No sandbox warning in terminal
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?
When claude starts with the sandbox enabled (either via configuration, command-line parameters, or a previous /sandbox command), Claude Code no longer displays a warning/notice at startup indicating that the sandbox is active.
Up to and including v2.1.175, a warning was shown whenever the sandbox was enabled. As of v2.1.178, this warning is gone.
This removes the only user-visible signal that the sandbox is in effect.
What Should Happen?
When the sandbox is enabled (regardless of how — CLI flags, settings, or managed config), Claude Code should surface a clear indication that the sandbox is active, as it did up to v2.1.175.
Error Messages/Logs
Steps to Reproduce
- Launch Claude Code with the sandbox enabled via command-line parameters:
``bash``
claude --settings='{"sandbox":{"enabled":true}}'
- Observe the startup output:
- v2.1.175 and earlier: a warning indicating the sandbox is enabled is displayed.
- v2.1.178: no such warning appears.
Claude Model
Not sure / Multiple models
Is this a regression?
Yes, this worked in a previous version
Last Working Version
2.1.175
Claude Code Version
2.1.178
Platform
Anthropic API
Operating System
Ubuntu/Debian Linux
Terminal/Shell
WSL (Windows Subsystem for Linux)
Additional Information
<img width="2098" height="999" alt="Image" src="https://github.com/user-attachments/assets/c52098bf-0e7d-4d57-9178-e2b21bb875af" />