AskUserQuestion dialog overwrites recent conversation output

Description

When AskUserQuestion renders a multi-choice dialog, the last few lines of conversation output (immediately before the question) get overwritten/cut off. Users cannot see the context that led to the question being asked.

Steps to Reproduce

1. Have Claude Code generate a response that ends with an AskUserQuestion call
2. The question dialog renders and covers the tail end of the preceding output
3. The overwritten content is not recoverable even via terminal scrollback (tmux copy mode)

Expected Behavior

The full conversation output before the question should remain visible, or at minimum preserved in the terminal scrollback buffer so users can scroll up to read it.

Actual Behavior

The last several lines of output are overwritten by the question dialog rendering. The content appears to be lost from the terminal buffer entirely rather than just scrolled off screen.

Environment

• Terminal: Ghostty
• Multiplexer: tmux
• OS: macOS