Thanks for confirming!
I think the menu was all in one line across the entire top edge and always visible, but that made it so the toolbar had to go on the side of the screen. I put most of the menu items I use frequently in the quick menu so I like that you can hide this menu to reclaim space. It is nice that its position lets the side of the screen be clear, too. I actually prefer this setup over the old layout- it feels less desktop-ish because the menu can be hidden, while maintaining the intuitive, discoverable access to functions that a menu adds. It definitely prioritizes discoverability over speed of use, but the quick menu can make up for that since its designed for speed instead of discoverability. I think there is a setting in the preferences to make the menu not auto close too, that you might want to try.