When running the [piu/keyboard](https://github.com/Moddable-OpenSource/moddable/tree/public/examples/piu/keyboard) demo on a moddable-two, I'm unable to press either the `q` or the `z` keys. - Attempts to press `q` appear to sometimes actuate the "back" arrow - Attempts to press `z` often actuate the `a` key