Animation does not start on first click or touch

Created a simple animation in Hype 3.0. Rotated a rectangle on its own timeline. Action - Mouse Click (Tap) to start this timeline. Exported as an html widget for ibooks. When I preview the book in ibooks on my iPad and on macbook, the animation does not start with the first touch (on iPad) and first click. It works fine for the second touch and second click. Can anyone help fix this problem? Thanks.

(posted the same question on Tumult Hype forum and attached files).