Yeah I found this limitation, didn't have quite enough time to work out all the kinks this weekend. I comment on this at the bottom of the page, I believe the mouse events go through the summary due to the 3D transformation. I'll probably have to rethink how that state is implemented (thinking fixed position, as long as the browser can smoothly transition).
Maybe a different/better idea is to put the text box in a fixed position out of the way of the books themselves. Even without the event problem it obscures the browsing view.
