A small rant: I think it is bad practice to hide content below the page height. I just wanted to close the website because I thought 'nothing to see here' before I accidentally scrolled and more content was revealed.
If I zoom out all the way, there's still no indication you can scroll down, because the page "helpfully" hides everything from you.
It's pretty bad.
It doesn't really matter if there's content below the page height, just that you ensure users see they have the affordance to scroll.
I rarely complain about design issues on websites but this a case where things should really be changed.