no no
i have restored these settings just recently, and a lot of bugs are still there.
In addition to what the topicstarter has said I see various problems of layout display, i.e. instead of showing A and B facing pages, one of two pages becomes blank + A, and then A and B are shown on next spread. So I see A page twice.
I have tried all 4 choises of layout positioning, and sometimes all 4 give me wrong results rather than simple and so expected view of two facing pages! Isn't it an idea of fixed layout?
One time I can see 4 pages instead of just two, another time I can look at epub in ipad in only vertical view (of course it is logical to be a horyzontal view), text sometimes just disappears..
Well when I deal with one page layout, everything looks much better, even animations work pretty good. But we are waiting for two-page layout digital engine, not?