[resolved] CSRF issue when ajax functions and normal forms are used on the same page

I'm not sure but I think it didn't work. It's always like this :

1- I enter in my input (text) and take the focus
2- I type some text that making ajax request and updating my database
3- If I click then on a submit button (without ajax but also with CSRF), it reloads the page without making the action...
4- I have to re-click on the submit button so that the form works. (It is as if an ajax call with CSRF on CI4 desactivates traditional form)

I've tried to make a focus on an element of my page when I focusout the inputs... ( $(window).focus(); $('body').focus(); ) without success.