This is not so much an error, but I notice that on non-sutta pages, like the donations page, there is zero margin at the bottom of the page. The last line of text is right against the bottom edge of the browser.
The sutta pages on the site have a footer, and that may be why this is happening. In fact, most web pages now a days have footers, so this is probably why SC stands out to me. It always seems like the page scroll is stuck or that something is getting cut off. I think if you added 1 or 2 em of space at the bottom it would look more like what I’d expect at the bottom of a webpage.