Hello!
I just want to inform you (I don't need this feature) that feature "Animate On Scroll" doesn't work with Firefox 52 ESR and Firefox 57 (Quantum).
Magnolia: http://www.joomla51.com/demo/0146/index.php/features/animations-on-scroll
Kinvara: http://www.joomla51.com/demo/0150/index.php/features/animations-on-scroll
Maybe that's just an issue with demo pages.