Issue is not with the keyboard app in particular - tried with anysoft and the default and this behavior is identical. I can tell from the this-is-the-key-you're-pressing-blurb that the invisible touch cursor is popping up all the way across the screen as if I was swiping very quickly, even when the keypresses are on opposite sides of the keyboard. If I type at a natural speed, this happens once every few words.
How would I go about beginning to troubleshoot this?