Remote Control: messages sent from phone/web show as sent but never arrive in the CLI session

Environment:

• Claude Code version: 2.1.208
• OS: Windows 11 Pro
• Login: Claude Pro account (not API key)
• Org: personal (not Team/Enterprise)

Steps to reproduce:

1. Start a CLI session, run /remote-control to get the mobile link/QR.
2. Open the session on phone — tried both the Claude mobile app and the web link (claude.ai/code/session_...).
3. Session content mirrors correctly (view works).
4. Type and send a message from the phone.

Expected: Message appears in the CLI session and Claude responds, per the documented two-way sync behavior.

Actual: Message shows as sent on the phone/web side, but never appears in the terminal session. No error shown on either end.

Already ruled out:

• Auth is correct (/status confirms Claude Pro login, not API key)
• Not an org policy issue (personal org, no admin-managed Remote Control toggle applies)
• Reconnected /remote-control fresh (new session link) — same result
• Confirmed CLI wasn't stuck in a local menu/prompt waiting for input
• Fully closed and restarted the phone (not just the app) — same result