I tried every possible way that I could think of: - Clean up history - Clear cache - Disable addons - Enter private mode - Disconnect Firefox account - I also tried turning off cookies

As you can see, Firefox still suggests a website that is not in my Bookmarks (I don't have reddit.com or any of its child page in my bookmarks). I also want to note that not only the address bar, but also the fields (username & password) of some sites that I bookmarked are still stored after I cleaned up everything.

p/s: I haven't tried creating a new profile. Let's see.