I have been working with support on this issue for over a week and after trial and error (and several headaches), I was able to identify the issue.
It seems that when CAPTCHA is added to a form (form widget), extra white space is added to the bottom of the page (about 20px). This happens in CHROME and iOS...IE seems fine, Firefox - no issues.
When CAPTCHA is removed, no issue. I though that perhaps the form was overlapping and pushing content down - but alas, not the issue. So i started with a blank page and footer (sticky and not) - the result: something gets added to the page and creates white space at the bottom.
Please advise.