On: Why Does Backspace Go Back A Page?

[martin-adams]

The arrow keys also do the same. And scroll is modal in that a scrolling content area gets the scroll first, but when it reaches the end, the parent then gets it (i.e. the page).

[commandar → martin-adams]

The arrow keys are explicitly navigation keys. I specified text input keys for a reason.

I had overlooked space; probably because the behavior is non-destructive.