[BUG] Additional instructions ignored during action rejection

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 I reject any proposed action (code changes, tool use, MCP calls) and include additional instructions in the same input, Claude Code acknowledges the rejection but completely ignores the new instructions provided in the same message.

This forces me to split every rejection into two separate messages, significantly degrading the interaction flow.

What Should Happen?

When I reject an action with additional instructions like "No, instead please
create a new file called example.js", Claude Code should:

1. Acknowledge the rejection of the original action
2. Process and execute the new instructions provided in the same input

The system should handle combined rejection + instruction inputs as a single
coherent request.

Error Messages/Logs

No error messages - this is a workflow behavior issue. The agent simply responds with acknowledgment of rejection and asks "What would you like me to do next?" while ignoring the instructions already provided.

Steps to Reproduce

1. Start any Claude Code session
2. Wait for Claude to propose any action (file edit, tool use, etc.)
3. Reject the action while providing new instructions in the same input:

Example: "No, don't modify that file. Instead, please create a new file called
test.js with a simple function"

1. Observe that Claude only processes the rejection, not the instruction
2. Claude responds asking what to do next, ignoring the "create test.js"

instruction

Claude Model

Opus

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.42 (Claude Code)

Platform

Anthropic

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

<img width="929" height="743" alt="Image" src="https://github.com/user-attachments/assets/6d9e031d-d363-4a8e-97cd-023683b96e94" />