Well, the labels are too small now and cannot be easily pressed. The standard scrolling methods that work elsewhere in FBReader no longer work in the Library window. Instead, it has got an ugly and unusable scrollbar. And the whole thing got slower for some reason, probably because it has to render more complicated content now. IMHO, you should at least make labels bigger and restore proper scrolling or, if there is such an option, return the old Library interface.
They were implemented with hildon notification ribbons. In fact, I have been fixing them the last time, after PR1.2 changed Gtk+ event handling mechanisms. No idea why FBReader reverted to those corner messages now.