[BUG] When Claude Code read github issue page using `Fetch` it only read the issue body and not the content

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 you paste a github issue to claude code, it uses the fetch tool to read the issue. However, the fetch tool only returns the issue body and not the replies. This lead to many cases there is a solution in the body but Claude thought it is unsolved.

What Should Happen?

It should return the full thread

Error Messages/Logs

Steps to Reproduce

1. Ask Claude Code to read a GitHub issue (usually with solution) in the thread (the one I used is https://github.com/vllm-project/vllm/issues/37729) what is the solution to it
2. Claude would only response the solution in the issue body (usually suboptimal) and not the final solution in thread

Claude Model

Opus

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.233 (Claude Code)

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_