[BUG] iTerm conversation history reappears after Command+K when running commands with long output

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 using Claude Code in iTerm2, the conversation history persistently reappears even after clearing the terminal with Command+K. This behavior is particularly problematic during compilation tasks.

The conversation history is re-rendered/redisplayed in the terminal, causing:

• Scroll position to jump to the beginning of the conversation
• Terminal to become cluttered with previously cleared content
• Poor user experience during iterative development tasks

Environment:

• OS: macOS (Darwin 24.6.0)
• Terminal: iTerm2
• Project type: SBT/Scala project
• Claude Code version: [you'll need to add this - run claude --version]

What Should Happen?

After clearing the terminal with Command+K, the conversation history should remain cleared.

Error Messages/Logs

Steps to Reproduce

Steps to Reproduce:

1. Have a conversation with Claude Code with multiple exchanges
2. Ask Claude to run a command that produces output (e.g., sbt compile)
3. Clear terminal history with Command+K
4. Ask Claude to run another command or continue working
5. Observe that the previously cleared conversation history reappears

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.67

Platform

AWS Bedrock

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_