[BUG] Session history/sidebar shows no prior sessions after app update (2.1.215 → 2.1.219), despite transcripts existing 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 the desktop app auto-updated from version 2.1.215 to 2.1.219, I logged out and then in again from Claude Desktop. This was due to a cached message saying I was nearing my weekly cap - because I clicked upgrade shortly before that and upgraded to the MAX plan, so that message should have disappeared. When I logged back in, the "Code" sidebar's Recents panel stopped showing any prior sessions for my project — only the current session appears. No filter control is visible to explain this (checked "New", "Artifacts", "Customize", "More" — nothing under More). I had to start completely from scratch and my sessions are "missing" as is my "project." It is as though it is a brand new install/starting from scratch. This is incredibly frustrating and has interrupted several hours/days of work.

Confirmed this is a real index/backend issue, not a display filter:

list_sessions MCP tool returns "No other sessions found" (responds in ~5ms, too fast to be scanning actual transcript files)
get_session on a known valid session ID returns "Session be9603ea-c6cd-4c27-8768-a14cb1d88df8 not found."
That session's full transcript (6.8MB, 2629 lines) still exists on disk at ~/.claude/projects/D--Project-Astralinia/be9603ea-c6cd-4c27-8768-a14cb1d88df8.jsonl, along with 8 other intact session transcripts spanning multiple days
Git history and project files for the underlying project are all fully intact — this is purely a session-tracking/index bug, not data loss

What Should Happen?

Prior sessions should still be listed/searchable after the update, since the underlying transcript files were never touched. My session history is effectively deleted and I cannot resume conversations w/ Claude on these sessions.

Error Messages/Logs

Steps to Reproduce

1. On Claude Desktop, using Sonnet, w/ sessions visible on the sidebar and project selected.
2. Update from version 2.1.215 to 2.1.219
3. Log out and then in again from Claude Desktop.
4. Now, the "Code" sidebar does not show any sessions nor a selected project - it is as if you are starting from scratch. There is no filter control visible to explain this (checked "New", "Artifacts", "Customize", "More" — nothing under More).

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.215

Claude Code Version

2.1.219

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

This is incredibly frustrating and unacceptable. I'm paying for this service and was mid-update on a massive coding effort w/ Claude. I lost all my sessions and am starting anew. I have been working for several hours & days on this. I just updated to the MAX plan tonight as well - and I lose my sessions? Seriously? I'd like some money back for this.