Steps to reproduce:
(1) In macOS (Monterey) System Preferences -> Dock and Menubar
Uncheck: Automatically hide and show menubar in full screen
This is so that even in full screen mode, the menubar is always visible
(2) Make an Orion window full screen
(3) Orion does go full screen, however: the toolbar is half-visible, half-hidden, and I do not see the menbar
I expect to see a full screen Orion window with the menubar still visible on top.
Screenshots below compare Firefox and Orion in full screen.
Orion, OS version; hardware type:
Orion 0.99.111-beta (WebKit 613.1.12)
Mac Mini M1
Firefox (correct behavior, menubar and toolbar fully visible):
Orion (menubar not visible, toolbar half visible):