Sorry, I'm a Mac user who stumbled into the Windows Forum because the topic I searched for unknowingly led me there. "Preferences" is a Mac thing, but, obviously Mac and Windows users are in the same boat with the same complaint. Bookmarks, the single, most fundamental, useful function of a web browser, appears to broken in Opera 43. In fact, all of the major browsers, except perhaps Safari (for Mac), have made bookmark management an arcane, non-intuitive, opaque, difficult to use, and, as shelluser above stated, awkward mess.
The Bookmarks bar is fine, by mine is rather full. What was the logic behind eliminating Unsorted Bookmarks? I moved (by the non-intuitive process of dragging) all of my no-longer visible Unsorted Bookmarks to "My Bookmarks," but now my menu shows a useless folder (called "My Folders") that displays the same list of Bookmarks that is displayed below the useless folder. No big deal, but why?