I do find sync incredibly frustrating. Although I have all the folders set to list view, every so often, randomly, it converts some or all of them back to tiles.
Because I sync between several devices, I have endless duplicates and there seem to be no way to get rid of them; even when I carefully prune them, they come back from the opera server. And the unsorted bookmarks seem to have a life of their own, and multiply alarmingly. And no facility to sort them alphabetically.
Does anyone have any advice on how to manage the bookmarks? I know that if I turn off sync on all the devices, eventually when I turn it back on, it will be a nightmare.