as with Chromium, Iron has 2 very basic things i do not like. spacebar is no longer able to scroll down a page, and the width of the window is not fully utilized, it's like there's a border around the four sides of the window that is not fully maximized. it's a problem when i quickly move my mouse up to switch to another tab, instead my mouse cursor changes into resize mode because it's at the edge of the window, it makes things slower