Static pages in read option

Hello,

I have a problem to select my static pages for each language : for french language, WordPress knows the front page and blog because I set them in the default option page. But, when I switch in english language and I select my english page, the french settings disappears. My english homepage is not considered as the homepage of my website. Therefore, it doesn’t take into account my own code (for example, i’m using ACF to add custom fields for every language homepages).
I tried to deactivate all plugins on my development server and this issue is still here. All plugins and WordPress core are using the latest versions availables.

Thanks for your help.