With HTC Sense UI its virtual keyboard doesn't commit the text you've typed when you click on a URL in the awesomebar, instead it erases the text you typed, closes the awesomebar, and doesn't load the page.
I see the same behavior with the stock keyboard (using swype, not sense).
changing title as its not just HTC sense (comment 2)
the STR for this bug are invalid now since we don't have suggestions for the url bar. Going to work on this general issue in bug 620695.