The bookmarks used to work by simply tapping the top right of the screen - a dog ear would appear instantly, instead of a drop down with a plus sign. The drop down also shows all other bookmarks in the book, so it does look cluttered. The old way was just one tap, the new way is two, plus you have to make sure you select the right place, otherwise the book will jump to one of the other bookmarks. I agree it was a needless change. The change was probably around six years ago though.
