Huh? Things now work as expected for me in Firefox 75.0: when in fullscreen mode (F11), typing Alt+H brings the location bar into view *plus* the Help menu, so I can see what is there to choose from. The other Alt+letter keys work too -- at least in the Dutch locale: Alt+B opens the File menu, Alt+W the Edit menu, and so on. So... I guess this bug is fixed?
Huh? Things now work as expected for me in Firefox 75.0: when in fullscreen mode (F11), typing Alt+H brings the location bar into view *plus* the Help menu, so I can see what is there to choose from. The other Alt+letter keys work too -- at least in the Dutch locale: Alt+B opens the File menu, Alt+W the Edit menu, and so on. So... I guess this bug is fixed?