Yes, this is a forms issue.  We opened a support case with Adobe and it appears to be a flaw in forms and there is no fix available.

We have web page accessibility issue to address in our forms. When a separator is placed on the form, the <hr> element, the element is announced by the screen reader. We would like to flag these elements to be skipped by screen readers by adding the aria-hidden="true" to the <hr>. How do we do this?...