On a terminal zoomed far out a poster is tens of thousands of cells, and redrawing it on every step of a held arrow key was more output than the terminal could draw (about 100 KB per step at 600x180), so the list lagged. A selection that changes again within 120 ms keeps the poster's place empty and shows the poster once it rests. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019reK4DUGYqDUjniWYJvwUW