[BUG] Claude Code freezes on paragraph long user input (1500 characters)

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?

Latest version freezes when user writes a long paragraph.

On the latest version of Claude Code v2.1.34 (Opus 4.6), entering a long paragraph (1500 characters or more) reliably causes the session to freeze. This is bad because the user will lose their context while exiting, and it shouldn't happen just from entering text. Besides, users have learned to manage the length of their contexts, so anything the user types is pretty important.

To reliably solve this issue and other crash issues, Claude Code should also save the conversation history in a reloadable way after each response and while the user is typing (draft), and if the previous session was exited abruptly it should offer to reload the previous conversation and what the user had started to type. This way the user won't lose their context.

Operating System: Debian Slim
Terminal: Gnome terminal (default terminal on Debian)
Claude version: Claude Code v2.1.34 (Opus 4.6)
Steps to reproduce: Enter 1,500 characters or more as a user, the session will freeze.
Expected behavior: the session should not freeze from a long character input. The user should be able to put as much as they want in each prompt.

What Should Happen?

Claude Code should not freeze.

Error Messages/Logs

Easily reproduced, but it's hard to take a screenshot or log since it is just a frozen screen.

Steps to Reproduce

Open Claude Code. Enter more than 1,500 characters in one paragraph.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.34

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Other

Additional Information

Standard, default installation. I didn't change any settings or configure anything about the terminal or installation.