Multiline paste broken in v2.1.105 on Windows (mintty/Git Bash)

[otternetwork]

Bug description

Pasting multiline text into the Claude Code prompt no longer works correctly as of v2.1.105. Either:

1. Newlines in pasted text are lost (text becomes a single line), or
2. Newlines in the paste buffer trigger message submission (as if Enter was pressed), sending the message prematurely.

This is a regression — downgrading to v2.1.104 restores correct behavior.

Environment

• Claude Code: 2.1.105 (broken), 2.1.104 (works)
• OS: Windows 10 Enterprise LTSC 2019 (10.0.17763)
• Terminal: mintty 3.6.1 (Git Bash / MSYS2, MINGW64)
• Shell: bash (MINGW64_NT)
• Node.js: v24.14.0
• TERM: xterm-256color

Steps to reproduce

1. Install @anthropic-ai/claude-code@2.1.105 globally via npm
2. Launch claude from Git Bash (mintty terminal)
3. Copy multiline text to clipboard (e.g., a code snippet with newlines)
4. Paste into the Claude Code prompt

Expected: Text is pasted with newlines preserved, waiting for Enter to submit.
Actual: Newlines are either stripped (single line) or cause immediate message submission.

Workaround

npm install -g @anthropic-ai/claude-code@2.1.104

Notes

• Likely related to input handling / bracketed paste mode changes introduced in 2.1.105.
• The issue may be specific to mintty (which has limited escape sequence support compared to Windows Terminal or ConPTY-based terminals), but was not present in 2.1.104 with the same terminal.

[github-actions]

Found 3 possible duplicate issues:

1. [BUG] Can't paste auth token into the CLI app, so can't auth. #47648
2. [BUG] Pasting text with trailing newline auto-submits prompt (iTerm2, macOS) #40909
3. Paste get truncated even with small input (less than one page). #13328

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[Reghunaath]

I'm facing the same issue in vscode terminal.