[wp-testers] Slashes being stripped from CSS escaped characters

[Brent Logan]

I'm not sure when the change took place, but editing a CSS file using
the theme editor strips the slashes from CSS escaped characters.

For example:

.next-comment-link a:before{content:"\2190"}

loses the \ before 2190.

It does make the blog look a little funny. I guess that's one way to
stop people from using the theme editor. ;-)

-Brent