[BUG] /memory UI corrupted by terminal focus escape sequences on macOS

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?

Bug Description

When using Claude Code on macOS, the /memory interactive menu renders corrupted text when selecting item 2 ("Project memory").

Instead of:

2. Project memory ✔

It becomes:

^[[O^[[Iject memory ✔

The escape sequences ^[[O and ^[[I are printed directly into the UI.

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Reproduction Steps

1. Launch Claude Code
2. Run:

/memory

1. Select item 2 (Project memory)

The corruption happens every time.

---

Expected Behavior

The menu should render:

2. Project memory ✔

without any escape sequences.

---

Actual Behavior

UI becomes corrupted:

^[[O^[[Iject memory ✔

Looks like terminal focus escape sequences are leaking into the render buffer.

---

Environment

• OS: macOS
• Claude Code: latest (updated daily)
• Reproduces on multiple terminals:

• Ghostty
• iTerm2
• macOS Terminal

Environment checks:

TERM=xterm-256color

Shell state is normal:

• stty normal (icanon, echo)
• bindkey normal
• not using tmux/zellij

This suggests the bug is likely inside Claude Code’s TUI handling rather than terminal configuration.

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Additional Notes

The escape sequences appear to match terminal focus events:

• CSI I → FocusIn
• CSI O → FocusOut

Possibly related to focus reporting not being filtered in the /memory interactive UI.

What Should Happen?

type /memory

Error Messages/Logs

/memory

────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
  Memory

    Auto-memory: on

    1. User memory              Saved in ~/.claude/CLAUDE.md
  ^[[O^[[Iject memory ✔         Checked in at ./CLAUDE.md
    3. Open auto-memory folder

  Learn more: https://code.claude.com/docs/en/memory

Steps to Reproduce

/memory

────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
Memory

Auto-memory: on

1. User memory Saved in ~/.claude/CLAUDE.md

^[[O^[[Iject memory ✔ Checked in at ./CLAUDE.md

1. Open auto-memory folder

Learn more: https://code.claude.com/docs/en/memory

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.178 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_