This is hardly important, but ...
In an answer, I used the LaTeX `O(n \epsilon^{1-d})`

to display
$O(n \epsilon^{1-d})$, but this is what it looks like to me (in Chrome 64.0.3282.140 under MacOS 10.13.3):

Note the $\epsilon^{1-d}$ is pushed downward, likely by the line above. But the use of the same LaTeX in this post looks fine (to me).

Is this a MathJax / Chrome bug?