Sessions bar: renaming a session via pencil icon reverts immediately on blur/Enter

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?

In the Sessions bar (left sidebar listing previous sessions), each session title has a pencil/edit icon. Clicking it opens an inline text input that accepts typing, but the new title is never committed:

Clicking away (blur) reverts to the previous title.
Pressing Enter also reverts to the previous title.

What Should Happen?

The new title is saved and displayed for that session.

Actual behavior
The input immediately reverts to the previous title. The rename never persists — not across sessions, not even within the same session view.

Additional context
This appears distinct from #11808 (rename not persisting across restart) and #50376 (duplicate entries in web sidebar after rename) — in this case the rename never takes effect at all.

Error Messages/Logs

Steps to Reproduce

Open the Claude Code VSCode extension.
In the Sessions bar, hover a previous session to reveal the edit/pencil icon.
Click the pencil icon — an inline input appears with the current title.
Type a new title.
Press Enter or click outside the input.

Claude Model

Sonnet (default)

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.101

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_