Anybody viewing the site in chrome will see weird trailing vertical lines at the end of equations. This is a known issue in the latest version of Chrome, and they assure us it will be fixed in the next update. If you find it too distracting, try viewing in Firefox, Opera, Safari, Internet Explorer or Edge – none of these browsers are having this issue.
an example $$x^2$$
We apologise for any inconvenience and hope they can fix this soon.