I noticed that too. When I calculated the collisions between the ball and the brick, I did it based on a 90 degree angle collision. When the ball is moving at a 45 degree angle, it sometimes doesn't work very well. Going to try and fix that in the next version.
Used the Tumult Hype 3, not the professional edition, to make this so I did not use the Physics Engine to calculate the collisions. Hope to find time to try and use that for the next version over the Christmas Break.