Firefox here. With some content blocking, but progressively disabled before I posted my initial comment.
If I make my viewport wider, the "Pricing" and "Login" links are further apart, and hovering "Pricing" no longer highlights "Login" (but clicking the non-highlighted "Pricing" does nothing).
Might be a float or z-axis issue compounded by viewport width and content blocking side effects?
Is that what you're looking for?