You can (or could, anyway) force it to open in a window (right click the app ico...

jsolson on March 3, 2017 | parent | context | favorite | on: Apple’s Devices Lose Luster in American Classrooms

You can (or could, anyway) force it to open in a window (right click the app icon and select "open in window"). This allows you to go really fullscreen and fixes control keys (C-w works again rather than closing the tab).