VS Code tab freezes after copying text from Claude Code output

Description

VS Code terminal tab consistently freezes/hangs after copying text from Claude Code output. After the freeze, if the terminal is dropped/killed, the session is not saved and cannot be resumed.

Steps to reproduce

1. Run Claude Code in VS Code integrated terminal
2. Have a conversation with some output
3. Copy text from Claude Code output (Cmd+C / Ctrl+C on selected text)
4. VS Code tab becomes unresponsive/frozen

Expected behavior

• Copying text should not freeze the terminal tab
• If terminal crashes/is killed, session should still be recoverable via claude --resume

Actual behavior

• Terminal tab freezes completely after copy operation
• Session state is lost — cannot resume after dropping the frozen terminal

Environment

• Claude Code version: 2.1.52
• OS: macOS (Darwin 24.6.0)
• VS Code: integrated terminal
• Shell: zsh

Frequency

Happens consistently/reproducibly.