As an aside - what the hell is happening with the font in this article? As an example - in the notes at the bottom, second note, in the word "flailing" the "fl"

As an aside - what the hell is happening with the font in this article? As an example - in the notes at the bottom, second note, in the word "flailing" the "fl" appear higher than "ailing", it looks like rendering of fonts is just broken on this website completely? Or is it this specific font that does this for some reason?