I like the detached menu, but mainly because it makes the application window smaller with less overall decoration. With multiple applications open, each window having menu bar decorations seems cluttered to me. I like the minimalist and consistent nature of it all.
However, it does get more complicated with multiple monitors and I don’t know of the solution here. You’re right that the UX falls when you’re trying to work with menus across multiple monitors.
Perhaps the right mix is doing something like the Chrome extras menu or if you’ve used VS Code on the web, where you have a small hamburger or (…) button that opens a context menu. Then you still have a menu for the application, but it’s hidden until you need it.
However, it does get more complicated with multiple monitors and I don’t know of the solution here. You’re right that the UX falls when you’re trying to work with menus across multiple monitors.
Perhaps the right mix is doing something like the Chrome extras menu or if you’ve used VS Code on the web, where you have a small hamburger or (…) button that opens a context menu. Then you still have a menu for the application, but it’s hidden until you need it.