- I mean the isfocusable property not being exposed to bp
- Simply add a button with a slider below it, ensure the button gets focus and then navigate down with the down arrow. To verify it has focus you can set the focus render rule to always.
- The current way to use the slider is to navigate to it and press enter, afterwards you can use the arrows to move it. For any normal user this is very unintuitive. I would expect to use the arrows immediately when navigating. Of course that means you can navigate to the left and right, but typical menus i make do not need such complexity anyways.