Airplane mode hotkey(F8) is useless while opening popup-menu or topright menu
On Ubuntu 20.04, click the top right tray bar to open the menu, or right click at terminal to show a popup menu, then press F8 to enable/disable Airplane Mode, it doesn't work.
But the Brightness(F5/F6) or Volume(F3/F4) works fine.
gnome-shell: 3.36.4