“Неверный контроль формы с ... не подходит для фокусировки.” Ответ

Неверный контроль формы с ... не подходит для фокусировки.

Just because a form control is hidden doesn't mean it isn't required. And since
it is required, but hidden the browser can't focus the form control.

Every place you have .hide() change it to .hide().prop('required',false) to fix 
your problem.