News from the support team: it seems that the new state management is coming…and those parameters are not required in the new world, i will update this thread when i’ll have more information on that. Thanks to the WW team for the answers!
About the fact that the form is not being send when i click on the submit button: it was a business rules problem on my side. I had something that hide a required element of the form, and it is not allowed to do that, so the form was crashing. Do not hide an element if it’s required in a form. Or, add the same rule to also set the “required” option to false if the element is hidden. Thanks the team for the help on that!