Comment 357 for bug 532633

I've noticed only one mention of the disappearance of the system menu, also called the window menu or the application menu. It's the one that shows when you click the application icon in the frame, right-click the frame, or press Alt+Space. To maximize a window, I usually use Alt+Space-X. That may be a habit formed to avoid missing Maximize and clicking Close.

I mentioned this bug to a Mac user I know and she knew the buttons were in the frame but didn't recall, without looking, which did what. She confessed she almost never uses the frame controls. A thousand anecdotes don't make a data point, but there you go.