Comment 81 for bug 663776

Test environment:
   Simplified Chinese
   ibus-pinyin 1.3.99.20110706-1
   unity 4.12.0-0ubuntu2

Test steps
1. click Dash
2. turn on Pinyin in the search field
3. type "DA", the character selection menu will show "1. 打, 2.大, 3.达, 4. 答,..."
4. press "Down" key in order to select the forth character "答", but the selection moves to dash application menu.