and then you select which seat you want from the ones available in that area. I've just been looking. It's just the same as it used to be only looks slightly different.
It goes stand, section, block, then when you click tickets it generates one for you.
Are you on about away tickets here, if so then yes, you can't select where you sit at an away match.
But if you are selecting home tickets you can select your seat just as you could on the old website.