Mac terminal: text selection for copying intermittently stops working

Bug Description

Selecting text in the Claude Code terminal on macOS for copying has become unreliable. Text selection frequently fails to register, drops mid-drag, or the selected text doesn't get copied when pressing Cmd+C.

Platform

• OS: macOS
• App: Claude Code (terminal / CLI)

Steps to Reproduce

1. Open Claude Code terminal on macOS
2. Attempt to click-drag to select text in the terminal output
3. Observe that selection often fails to appear, deselects immediately, or Cmd+C does not copy the selected content

Expected Behavior

Text selection and copy (Cmd+C) should work reliably every time.

Actual Behavior

Text selection intermittently fails — the selection highlight may not appear, may vanish immediately after releasing the mouse, or the clipboard doesn't receive the selected text after Cmd+C. This happens frequently.

Frequency

Often / frequently. Appears to be a regression.

Additional Context

This worked reliably before. The behavior seems to have regressed at some point and now fails often enough to be disruptive.