I guess this weekend, either Apple or Amazon had some updates.  The result is less than pleasing.  I was reading one novel on my IPad and wanted to go back a couple of chapters. Normally, I touch the the upper left on the screen and book details like cover, table of content (if exists) etc appear and you can easily go wherever you please in the book. Now, I can touch, tap several times, move my finger slightly around in the corner, nada. After a while, it generally works but it is super annoying. 


Does anyone know what happened and hopefully, let me know what I can do to go back to reading enjoyment?