Very disappointed that it is no longer possible to navigate a book in any sensible way. Amazon has ruined the app for reading any book with references, footnotes or other hyperlinks. For example; you can no longer go back to the page you were last reading if you decide to follow a footnote. You are lost and must either remember the location you were at or fumble around in the TOC to eventually find your place. Apparently no user testing at A since this major bug would have been easy to catch.