Its happening because you are hitting the home key when typing the T. As soon as you hit it, the device goes to the home screen, but since you are still typing, the "he" that you're seeing is the input into the instant search from the home screen. When on a home screen and you start typing, it instantly hits the universal search.
So, you never even see the home screen because it is instantly hitting the instant search as soon as you type the next letter.
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