[BUG] keybindings.json is rebinds not working for Enter key

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?

Enter key cannot be rebound from chat:submit to chat:newline — tried null unbind, direct rebind, and split context blocks in keybindings.json. None take effect.

What Should Happen?

if Enter key is rebound from chat:submit to chat:newline in keybindings.json, when entering a query in the chat windows, hitting enter should start a new line, not submit the query text

Error Messages/Logs

Claude told me
> But honestly, the core issue is that rebinding enter away from submit appears to be a bug in the current version of Claude Code. The keybindings file we created is correct per the docs — it just isn't being honored.

I'd recommend reporting this as a bug at github.com/anthropics/claude-code/issues. The gist:

Enter key cannot be rebound from chat:submit to chat:newline — tried null unbind, direct rebind, and split context blocks in keybindings.json. None take effect.

Steps to Reproduce

1. update claude to the latest version
2. modify the keybindings.json to rebind the enter key chat;submit to chat:newline
3. restart claude
4. open claude desktop and start a new code session
5. in the chat box, type "you shouldn't see this, if you do than the Enter rebinding is not working, hitting enter now"
6. hit enter
7. Claude responds, instead of the chat entry textbox starting a new line

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No idea, claude did 2 updates in the space of an hour and I'm not sure what the previous version was

Claude Code Version

1.2773.0 (884b37)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

<img width="787" height="1116" alt="Image" src="https://github.com/user-attachments/assets/a02685a2-44a2-4da1-9280-0badebf0f031" />

<img width="795" height="1028" alt="Image" src="https://github.com/user-attachments/assets/94515d45-2e0b-4f45-b6a4-63ef2bfd7cb4" />