I've been having an issue where if I set the first section 1 to not visible (for a collaboration job) then you see a blank page and have to hit 'continue' in order to see the first 'visible' section.
From the raised ticket:
Looks like what is happening is that, when the form is loaded the currentPage phase value is intially set to 1. So when you open the form it is still going to the 1st page which is hidden so you just get a blank page.
You need to add some logic in the form to change the currentPage value, when you load the form again after the first section is hidden, to the next page. My suggestion for your collaboration job would be to add a business rule that changes the currentPage to 2 on form initalisation maybe using the StepName phase value to determine where in the collaboration job you are so you can properly set the page number.
This is an issue with the Composer / Maguire forms. Could you please raise it via the support portal.