You are doing nothing wrong. It is a little quirk in the system.
To get around it what you need Type until you get where it is different, press the space bar, then backspace to delete the space. This will un-highlight any of the suggestions allowing you to type in the name you want.
So, in your example, Type 'Magician ' (note the space after Magician) the press the backspace. This will leave just 'Magician' (without space) and no item in the list highlighted.