[BUG] Long text output truncated/cut off at terminal edge on macOS

[chrisvince]

Description

Long lines in Claude Code output are cut off at the right edge of the terminal instead of wrapping. Text after the cutoff point is lost — it's not accessible by scrolling horizontally. This makes it difficult to read longer output like recommendations or explanations, requiring the user to ask Claude to repeat the output in shorter lines. I think it has to do with the select, i.e. text above the select gets cut off.

Steps to reproduce

1. Run a command/prompt that produces long paragraph-style output (e.g., a recommendation or explanation that exceeds the terminal width) with a select
2. Observe that the text is cut off above the select
3. The truncated text is not visible — no horizontal scroll, no wrapping

Expected behavior

Long lines should wrap to the next line within the terminal, so all text is visible.

Actual behavior

Text is truncated at the terminal width boundary. The remainder of the line is lost.

Screenshots

Environment

• OS: macOS (Darwin 24.6.0)
• Terminal: macOS Terminal.app
• Claude Code version: latest

[github-actions]

Found 3 possible duplicate issues:

1. [Bug] CLI output truncated on right side in iTerm2 #42207
2. Output uses hard newlines for word wrap, breaking tmux copy mode #42296
3. [FEATURE] Add a flag that tells Claude Code to emit long lines for prose/markdown content and let the terminal emulator handle word wrapping, rather than inserting hard newline characters at word boundaries #43113

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🤖 Generated with Claude Code

[github-actions]

This issue has been automatically closed as a duplicate of #42207.

If this is incorrect, please re-open this issue or create a new one.

🤖 Generated with Claude Code

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.