When I tap on the address bar to enter a new search term, the current text in the address bar becomes highlighted, but as soon as I'm done either typing the new search term or saying it using voice search and I hit enter. The address bar adds the new search term to the end of the originally highlighted text and then does a search. As if the old and the new text is one in the same. How do I fix it so that the new search term will automatically replace the old text as it's always done?