(Firefox Version: 115.6.0esr (64-bit), Mac OS 10.13.6 High Sierra)
Context: MacOS has a navigation shortcut to switch application's windows.
Issue: If Firefox has multiple windows with some in Full Screen, the shortcut will only switch to windows that a not in Full Screen.
Steps to reproduce:
1 - Start Firefox with one regular window. The number of tabs is irrelevant.
2 - Open 2 windows with the last one in Full Screen. The windows should be in order: regular, regular, full screen.
3 - from the Window Menu, select the Start window
2 - Press Command ` once -> the next window will be the other regular window
3 - Press Command ` once again
Expected Result: The Full-Screen window is displayed
Actual Result: Firefox will skip the Full Screen window and display the Start Window