The "invisible buffer" doesn't match OS X functionality (with Firefox if it matters).
In the state dropdown of the article I can type "New J" to highlight "New Jersey" and then press backspace + "Y" and it will highlight "New York". In the headless UI version if I try similar "To" to get "Tom…" but if I press backspace and "a" I don't get "Tanya…" I get "Arlene…"