[BUG] /context command window flickers for 3-4 seconds then closes immediately

Bug Description

The /context command opens a window that flickers/flashes for 3-4 seconds, then immediately closes without displaying any content. Previously this worked correctly.

Environment

• Claude Code version: 2.1.9
• OS: macOS 15.7.3 (Sequoia)
• Terminal: iTerm2 3.6.6
• Shell: zsh
• Node: Tested on both v25.3.0 and v22.22.0 (LTS) - issue persists on both

Steps to Reproduce

1. Start a Claude Code session
2. Type /context and press Enter
3. Observe: window flickers/flashes for 3-4 seconds
4. Window closes immediately without showing context usage

Expected Behavior

The /context command should display a stable window showing context usage breakdown (tokens used by conversation, files, tools, etc.)

Actual Behavior

Window appears briefly, flickers for 3-4 seconds, then closes. No content visible.

Additional Context

• This worked correctly in previous versions
• Issue occurs in iTerm2 (not tested in other terminals)