[BUG] Desktop app: sidebar session items can no longer be manually reordered via drag-and-drop (regression, worked until ~1 week ago)

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?

Description

In the Claude Code desktop app, I used to be able to manually reorder session items in the left sidebar by dragging and dropping them. This worked correctly until about a week ago. Since then, dragging a session item has no effect — the item does not move, and the order stays unchanged.

Environment

• Claude desktop app version: 1.32885.1 (released 2026-08-15)
• OS: macOS (Darwin 25.5.0)
• Area: Desktop app sidebar (not VS Code extension)

What Should Happen?

Expected Behavior

The session item moves to the new position and the sidebar order updates accordingly (as it did prior to ~2026-08-14).

Error Messages/Logs

## Actual Behavior
The dragged item does not move at all. The sidebar order remains unchanged after the drag-and-drop attempt.

Steps to Reproduce

1. Open the Claude Code desktop app
2. Look at the left sidebar, which lists session items
3. Click and hold on a session item, then drag it up or down to a different position in the list
4. Release the mouse button

Expected: The session item moves to the new position and the sidebar order updates.
Actual: The item does not move at all — the sidebar order stays unchanged.
Note: This worked correctly until about a week ago (around 2026-08-14). It appears to have broken after updating to desktop app version 1.32885.1 (released 2026-08-15).

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.32885.1

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

Additional Context

• This behavior change coincides with the 1.32885.1 update released on 2026-08-15.
• I did not change any settings; this previously worked reliably.
• A full app restart did not resolve the issue.
• Related open feature requests for sidebar reordering exist (#72126, #73550), but this report is specifically about a regression — functionality that used to work and has now stopped, rather than a missing feature.