Terminal rendering corruption (garbled/overlapping characters) in v2.1.83

[saurav-malani]

Description

After updating from v2.1.81 to v2.1.83, intermittent terminal rendering corruption appears where characters overlap and become garbled/unreadable.

Steps to Reproduce

The issue is intermittent and not always reproducible on demand, but occurs during normal Claude Code usage.

Expected Behavior

Text renders cleanly and legibly in the terminal.

Actual Behavior

Text appears garbled with characters overlapping — letters have extra symbols overlaid at incorrect baselines, making output unreadable. The corruption appears intermittently and not exclusively in the terminal (also observed in other contexts).

This likely relates to the fix in v2.1.83: "Fixed mouse tracking escape sequences leaking to shell prompt after exit" — escape sequence handling changes can cause terminal rendering corruption.

Environment

• Claude Code version: 2.1.83
• OS: macOS
• Terminal: iTerm2
• Started with: v2.1.83 update (was working fine on v2.1.81)

[github-actions]

Found 3 possible duplicate issues:

1. [BUG] Terminal rendering corruption in tmux - text overlaps and overwrites previous output #29937
2. TUI rendering corruption when multiple Task agents run in parallel #29182
3. [BUG] Terminal rendering corruption during AI response generation (Frosting state) #22734

This issue will be automatically closed as a duplicate in 3 days.

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🤖 Generated with Claude Code

[github-actions]

This issue has been automatically closed as a duplicate of #29937.

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.