Right-click paste broken since ~2.1.167: mouse reporting captures right-click, requires Shift+right-click workaround

Description

Right-click paste (terminal context menu) stopped working in the Claude Code input window around version 2.1.167/2.1.168. Previously worked without issue.

Claude Code appears to enable terminal mouse reporting mode, which intercepts right-click events and prevents the terminal emulator from showing its native context menu. The workaround is to hold Shift while right-clicking, which bypasses mouse capture and restores the context menu.

Steps to reproduce

1. Copy any text to clipboard
2. Open Claude Code (claude)
3. Right-click in the input area
4. Expected: terminal context menu appears with Paste option
5. Actual: no context menu appears; mouse event is consumed by Claude Code

Workaround

Shift + right-click still produces the terminal context menu and paste works normally.

Environment

• Claude Code version: 2.1.168
• OS: Linux (Ubuntu/Debian)
• Terminal: VTE-based (VTE_VERSION=6800, e.g. GNOME Terminal / Tilix)
• TERM: xterm-256color
• COLORTERM: truecolor

Additional context

• Ctrl+Shift+V also works for text paste
• Ctrl+V shows "no image found" (understood to be intentional per v2.1.162 changelog)
• Changelogs for 2.1.167 and 2.1.168 both list only "Bug fixes and reliability improvements" with no detail, so the root cause is unclear