[BUG] input handling gap in intellij

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?

input handling gap: opt+2 → @ isn't being forwarded correctly to the chat input component, @ doesn't appear.

What Should Happen?

when pressing opt+2 in macos spanish keyboard @ should be displayed

Error Messages/Logs

Steps to Reproduce

in jetbrain phpstorm ide terminal, using claude code, when entering opt+2 in prompt area nothing appears, it should be the @ keyboard mapping

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude Code 2.1.78

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

IntelliJ IDEA terminal

Additional Information

_No response_