It was using the decimal sanitizer/keyboard, same as the rate field next to it — but Sats are indivisible, so this one should behave like the existing Sats amount field: integers only, numeric keypad. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FXcrACM5sok3M1KQJ8kByy