All language posts counted in categories display

Hello,

I've got a problem when creating french and english versions of a same article.
We can't link them too as in joomla system but it's not a big problem. The real one is when you open the category menu or module : it counts the two.

A simple exemple :

The joomla language system is activated, tested.

1. I create an article called "Bonjour et bienvenue !"
   
2. and set it's language property to "french"
   
3. I create an article called "Hello and Welcome !"
   
4. and set it's language property to "english"
   
5. I add a category module
   

Now if I go on the home page, select french, I will only see the first article (french one) BUT, the categories module says there are 2 articles. It's the exact same behavior if I do this with a sub-category instead of articles. The category counting and display system totally ignores languages.

Could you please fix that ? It's really annoying.

Thank you so much !