I really don’t like the way Safari 26 handles the bookmarks sidebar now. Before this update, when you opened the sidebar, all your bookmark folders were shown in a clear hierarchy, and you could just click a folder to reveal its contents underneath. But with Safari 26, it slides out to the right, opening a new screen with your bookmarks (and some preview icon), which feels really awkward. If you have a lot of folders within folders, organized during years of use, this new system makes it easy to lose track of where you are in the hierarchy. Plus, now I always have to go back every time I finish browsing a folder, which is super annoying. Navigating my bookmarks on Safari 26 has become a chore, and since this is the way I mostly browse the web, I had to go back to Safari 18 for the time being.