[BUG] Permission mode not synced across devices for the same session — remote instance stays in default mode

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?

Actual: Remote client never received the Plan Mode change; answering there flipped the local session out of Plan Mode without notice. The agent then began making edits that Plan Mode was meant to prevent.

There appears to be a bug with Claudi.AI that if you have two apps open. One locally, one on a remote machine. I changed a local instance to Plan Mode. I then entered my prompt on my local machine and let claude work on a response. I later checked my remote app to review questions prompted to continue. I answered those questions on my remote machine. However, I didn't notice that remote machine didn't change to Plan Mode, even though I set that on my local machine. When I answered remotely, Claude changed the mode on my local machine. Instead of staying in Plan Mode it switched to Accept Changes and then started to make modifications to my code base and burn through tokens.

What Should Happen?

Expected: Permission mode is session state and propagates to every attached client; answering from a second client does not silently downgrade Plan Mode.

Error Messages/Logs

Impact: Loss of the safety guarantee Plan Mode exists to provide — unintended file writes and token spend.

Suggested fix: Propagate mode changes to all attached clients, and/or reject an answer from a client whose mode is stale rather than adopting it.

Steps to Reproduce

1. Open the same session on two machines (local desktop + remote).
2. On the local machine, switch to Plan Mode.
3. Agent asks a question (AskUserQuestion); answer it on the remote machine, which is still in the default/Accept Edits mode.
4. The session's effective mode becomes the remote machine's mode.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.2.220

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

Reference ID: 6cdbad27-aa3c-46a4-8dc3-468bcabd885a

Local Windows Claudi.AI App: 1.24012.9 (03c61d)
Remote Mac Claudi.AI App: 1.24012.9 (03c61d)