Chrome was the first browser to handle that one pixel specially, and Firefox followed quickly (around version 4 or so). For some reason Opera never copies it.

Chrome was the first browser to handle that one pixel specially, and Firefox followed quickly (around version 4 or so). For some reason Opera never copies it. It used to be a big deal when I spend most of my time with a single monitor. With dual monitors, Xmonad keeps a one-pixel border around the active window so "move the mouse all the way up and click" doesn't work anymore. You choose your own poison :) Only when reading this thread that I realized there are people preferring Opera's behavior, which is kinda eye-opening.