I use google chrome, I’ve tried it with 3 different devices and It happens on all of them.
Related to the footer issue I found another bug, while scrolling up (above header) – you start to see the footer :O and it happens on google chrome and it worst on “safari”
Here a quick video that show the bug:
https://www.veed.io/view/4cc5d653-bbae-4f8e-84ca-e81c806cd9d0?sharingWidget=true