So it seems the problem is that we have no generic design to show "I accept keyboard input". The TextField/Area for instance changes its background color. This is distinct from the focus ring, which on TextField/Area also only shows if (Shift)Tab was used to focus it. Buttons generally don't do that.
So it seems the problem is that we have no generic design to show "I accept keyboard input". The TextField/Area for instance changes its background color. This is distinct from the focus ring, which on TextField/Area also only shows if (Shift)Tab was used to focus it. Buttons generally don't do that.