Keyboard focus and inert attribute

[vever001]

Hello,

Compare the keyboard tab navigation for these 2 examples:

• Mmenu-light: https://mmenujs.com/demo/index.html?demo=mmlight
• Mmenu: https://mmenujs.com/demo/index.html?demo=menu-advanced-3

We can see that with mmenu-light, the keyboard is focusing on hidden elements inside the menu.
However with mmenu, that is not the case as it seems to use the "inert" attribute there.

I wonder, as it seems rather an important feature for accessibility, could we add this to mmenu-light as well?

Thank you