[BUG] /compact no longer clears conversation window — scroll indicator unusable as context gauge

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?

Title: /compact no longer clears conversation window — scroll indicator unusable as context gauge

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Describe the bug

Previously, running /compact would visually clear the conversation window. The message history would be
replaced with a summary, and the scroll indicator would show that the window was nearly empty. This gave a
clear confirmation that compact had run, and made the scroll indicator useful for judging how full the
context was getting.

Recently, this behavior changed. After running /compact, the conversation window is completely unchanged
— All previous messages remain visible; nothing is summarized or cleared visually.

What Should Happen?

Expected behavior

The conversation window should update to show a summary (or be cleared), consistent with how it worked
previously. The scroll indicator should reflect the compressed context state.

Actual behavior

The window stays exactly as it was before /compact was run. The scroll indicator always shows a full
window regardless of compact having run.

Error Messages/Logs

Steps to Reproduce

To reproduce

1. Have a long conversation in Claude Code
2. Run /compact
3. Observe that the conversation window does not change — full history remains visible

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

v2.1.104

Platform

Other

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

Impact

• No visual confirmation that compact ran successfully
• The scroll indicator is no longer useful for gauging context fullness
• No way to tell when auto-compact might fire mid-session