I have noticed that the new menu system in gantry 4.1.1 is malfunctioning in mobile view . I tried to switch it to select box in admin section but it didn't respond.
Currently it is set to select box but still shows the menu panel in mobile view. In addition the menu panel is always opened and is covering my showcase section. I believe it is supposed to be something like the menu panel in the new RT Metropolis template but off course without the style.
am I correct in my doubts about how the panel should work in mobile view ??
I am guessing that you are using Gantry template. You should also upgrade template itself and not just Gantry framework. New menu system is integrated in the template so you need both elements to be latest versions