[BUG] Desktop app session list only shows the newest session after update (data intact on disk)

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?

After updating the Claude Code desktop app to version 1.22209.0, the session list panel on the right only shows the most recent session. All older sessions for the selected project are missing from the UI. Possibly related" auf #78754?

Confirmed this is NOT data loss: all historical session files are still present and untouched on disk under ~/.claude/projects/<project>/*.jsonl (25+ files, dating back several weeks, correct sizes and timestamps). The project folder is correctly selected in the app. A full app restart (including quitting from the tray, not just closing the window) did not resolve the issue.

This points to a UI/index bug introduced by the update — the app appears to not be re-scanning or re-indexing existing session files after the update, rather than an actual loss of data.

Steps to reproduce:

Have multiple existing sessions for a project (stored as .jsonl files under ~/.claude/projects/)
Update the desktop app
Open the app, select the project
Only the newest session appears in the session panel; older ones are missing despite being present on disk
Expected: All existing sessions for the project should be listed, as before the update.

Additional feedback: I had to spend paid usage/tokens diagnosing this update-introduced bug myself (locating the session files, confirming data integrity) before finding out it was a client-side display issue. It would be appreciated if update regressions like this didn't require users to burn their own usage to rule out data loss.

Environment: Windows 11, Claude Code desktop app version 1.22209.0

What Should Happen?

Display my Session List, ont he left side of the App

Error Messages/Logs

non

Steps to Reproduce

1. Have multiple existing sessions for a project (stored as .jsonl files under ~/.claude/projects/)
2. Open the Claude Code desktop app on Windows 11, build 1.22209.0
3. Select the project in the sidebar
4. Observe that the Sessions panel only shows the newest session; all older sessions are missing
5. Fully quit the app (including tray icon, not just closing the window) and relaunch
6. Re-select the same project — older sessions still do not appear, despite being present and unmodified on disk under ~/.claude/projects/<project>/*.jsonl

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

1.21459.3

Claude Code Version

1.22209.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

It took 4.2 million tokens to find the error, for an issue that wasn't my fault. I'd like to get them back.