The behaviour you found out is an inheritage from the good old Windows Phone 7. I use it quite frequently, because when I'm going through the list it's usually

The behaviour you found out is an inheritage from the good old Windows Phone 7. I use it quite frequently, because when I'm going through the list it's usually because I couldn't reach to the program I wanted by just typing the name. So if what I need it's under "W", then it's a way to be quicker.