Duplicated "searchform" id

Hello, upgrading to catchbox pro 4.0, I found a bug that breaks my custom css: the id of the search form is duplicated. The bug appears on the 404 error page, where the theme shows a search form at the bottom of the error message. If you have another the search form in the header widget, both of them share the same id "searchform". Moreover, the body tag has the class "right-sidebar" when the page is clearly a single column layout. Thank you