@annoyed-at-updates: if you move tabs to an additional window just to create a split screen there's a chance of losing every open tab you had open. Power goes out, you close the "main" window without previously closing the temporary one, and now everything is gone. If there are tabs you haven't opened in a while they might not even show up in history for the last time you opened the browser. As for drag & separate - just release the tab above the address bar area, it's really not that hard to figure it out