XF 2.1 How to keep the top navigating bar always like mobile style?

[gogo]

In all responsive views, I would like to keep the navigation bar consistent.





How do I do it?

 

[gogo]

I found a method to do so which is changing the value of 'Navigation collapse width' (ACP/Appearance/Styles/Style properties) to a really large number.



Then the navigation bar will become mobile view like.

But it seems that this will cause some problems in some add-ons that rely on this value for determining whether it's a mobile view...