[roblabla]

Sadly, it doesn't work in Edge (Although it's a rather good thing : there's no space in the chrome without tabs, so it would've been awkward)

[b15h0p]

The same holds for all "Metro" apps, apparently. The "top-left-menu" is neither present in calculator, nor the new settings app (or weather, mail, calendar ...).

[jnky]

The menu itself is present. You just have to press Alt+Space to get to it. Alternatively, you can also right click the title bar - even in modern Windows apps.