[BUG] Pressing shift+space inserts the word "space" instead of adding a space

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?

Pressing shift+space when typing inserts the word "space"

What Should Happen?

Pressing shift+space should insert a space.

I never realized how often I still have the shift key pressed after typing "I" then pressing space until I could no longer type into claude code with seeing "Ispace [...] Ispace".

Error Messages/Logs

Steps to Reproduce

Open claude code. Press shift+space. You will see "space" printed in the input area.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.0.76

Claude Code Version

2.1.1

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Other (ghostty)

Additional Information

<img width="1279" height="966" alt="Image" src="https://github.com/user-attachments/assets/868f1e76-5011-4a6a-832a-c24bede71cbb" />