Form with default settings will not have inner scroll. You need to define “scroll” attribute.
By default form will adjust self to fit all inputs, and as result it may produce scroll on the external container ( document.body ), unfortunately webix styles block such scroll. To restore it you can add css style like next
I followed suggestion to use “body.webix_full_screen{overflow: scroll;}” and it resolved the problem, but X and Y scroll bars are visible even when not needed.
I belive the similar issue is reported as a bug#64.