Language selector doesn't display on mobile view

[Frenchy]

Hello,

 

I have a problem with mobile version of a website. As the title says, the language selector is doesn't display on mobile version. On Desktop it's work within problem.

With the inspector I have : 

<div id="_desktop_language_selector"></div>

With nothing in it...

How can I fix this ?

 

Thanks

[Frenchy]

Edit : When I remove the class, the selecor appear but I can't select language, the dropdown doesn't works

[Frenchy]

Edit : i've remove the class and i add z-index: 1 on 

<div class="language-selector dropdown js-dropdown" style="z-index: 1;">

It's works