As far as Ubuntu supporting window snapping, it’s worth noting that Linux has supported every conceivable window management feature for years, including some that have never come anywhere near Windows or Mac, like tiling window managers. making window management entirely modular.
Every WM or desktop combo in Linux has other features I find highly convenient which are strangely missing from Mac and Windows, such as a drag modifier key for windows, which allows you to move a window when the title bar is off screen. I prefer features like windowshading to minimization, too, and it is simple to configure Linux to do that, unlike Mac or Windows. I don’t use the feature, but would surprised if window-snap-to-borders wasn’t supported as far back as KDE 1.3 or WindowMaker .92.
Every WM or desktop combo in Linux has other features I find highly convenient which are strangely missing from Mac and Windows, such as a drag modifier key for windows, which allows you to move a window when the title bar is off screen. I prefer features like windowshading to minimization, too, and it is simple to configure Linux to do that, unlike Mac or Windows. I don’t use the feature, but would surprised if window-snap-to-borders wasn’t supported as far back as KDE 1.3 or WindowMaker .92.