Keybindings don't seem to fully work?

[philiprenich]

I'm attempting to use @keyup.up and others like it. While @keyup.enter works fine, others don't. However, @keyup.arrow-up is fine. @keyup.delete only handles Delete, not Delete and Backspace (need to add the latter).

Here's a simple example. https://codepen.io/philiprenich/pen/qBPZyze

Is this missing or am I misunderstanding something? Thanks!