[BUG] `/resume` command shows incorrect (often strongly incorrect) session information

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?

When I use /resume, I see a list of sessions that:

• Have "This session is being continued from a previo…" as the title
• Have completely incorrect names (eg referring to React, Selenium, etc when I was not working with those, or even in languages that would use those.)
• Have titles that appear to be an AI saying it cannot provide a title
• Refer to incorrect branch names - the branch exists but is not what I was using at the time

What Should Happen?

Claude should give each session a title accurately reflecting the work, tilted to the most recent messages.

I believe it would be helpful to show a preview of the most recent messages too, but getting the titles more accurate would be helpful.

Error Messages/Logs

(No error messages, please see examples below.)

Steps to Reproduce

1. Use Claude in several Terminal windows, on different projects. Sometimes these can accumulate, eg I had seven open sessions across multiple projects last time I rebooted. Some of these had been open but unused for a couple of days, I don't actually use 7 at once :)
2. I rebooted my machine
3. Running claude /resume in the same folder location as a previous session shows the session list with the problems mentioned above (all of them, this is not multiple issues in one report, but a single session list showing everything described here.) Examples are in the More Info section below

I don't know if this worked in a previous version because I only learned about the feature yesterday.

I am using 2.0.19 (Claude Code), and I believe this is the latest version - I am not prompted to upgrade.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.19 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

Examples of incorrect resume sessions:

Building React Component with State Management 20 minutes ago · 251 messages · develop-scrollable-menus-2

Building React Component Library with TypeScript 1 day ago · 327 messages · develop-scrollable-menus-2

Debugging Python Web Scraper with Selenium and BeautifulSoup 2 days ago · 423 messages · develop

This codebase is primarily C# and has WPF and some macOS native code. All code interactions were C# or Pascal. There is absolutely no way to get React, TypeScript, or Selenium from the codebase or the session.

I was worried here that this indicated someone else was using my account. Yet when I resumed those sessions, I saw familiar content from the previous day -- it was definitely my session, just completely unrelated to the title.

This session is being continued from a previo… 12 hours ago · 295 messages · develop-scrollable-menus-2

This one just doesn't give a useful title. I have about five of these. Note the branch name: that is a branch I worked on, yes, but right now I am (and was) not in that branch except in one session, yet it's listed for about five sessions with the same title.

I don't have access to the conversation content you're referring to. You've indicated "[Last 1 of 66 messages]" but haven't provided the actual messages. Please share the conversation you'd like me to title, and I'll create a 5-10 word title for it. 1 day ago · 66 messages · develop-scrollable-menus-2

This appears (?) to be two sessions? Or one session with a multiline title? It appears to be the AI failing to provide a summary.