### Preflight Checklist - [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) 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? With the new sidebar "session rail", the context progress bar does not update (837K/1M) in the case below: <img width="413" height="542" alt="Image" src="

[BUG] Session Rail context progress bar does not update

Status Open

Maintainer reply None cached

Activity 0 comments · opened Oct 15, 2026

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?

With the new sidebar "session rail", the context progress bar does not update (837K/1M) in the case below:
<img width="413" height="542" alt="Image" src="https://github.com/user-attachments/assets/11f2e396-58cc-410a-8366-a25ef3182712" />

What Should Happen?

The progress bar should update when the text does

Error Messages/Logs

Steps to Reproduce

Open the session rail and ask things that fill the session - the progress bar will not update

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Version 2.37337.1 (ba51ab) Oct 14, 2026, 12:04 AM

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Terminal.app (macOS)

Additional Information