Categories translations - alphabetical order

I want to have all my categories displayed by alphabetical order.

The main language is English, but I also use 2 others languages. Language component is Falang.

To have the categories in alphabetical order, I change this parameter :

Section General Parameters > Templates > Category Index > Cobalt7 Template (Same problem with other templates)

Cobalt7 Template parameters : General Parameters > Ordering > Name ascending (a-z)

This way, the categories are displayedb by alphabetical order BUT ONLY IN ENGLISH.

For the other languages the order is the same than the english order.

How can I have the categories displayed alphabetically for ANY LANGUAGE ?

Thanks for help.

Regards.