I'm scratching my head over this and wondering if maybe something in my autocomplete settings are screwing with the input, I eventually figure out that they've somehow managed to make a form field that only works with specific software keyboards.
This is the first time I've ever seen anything like this. There's something new in the world. It's oddly beautiful, but haunting, a little melancholy. Luckily I have a few different keyboards installed on this thing so I change around a bunch until one of them works and lets me input normal words instead of this whimsy.
But there's still nowhere to put this phone number it's been asking me for, and no way to proceed, so I cast the app out of my mind for several more months