User blog comment:Rappy 4187/Technical Update: September 16, 2014/@comment-452-20140918125427/@comment-126761-20140918140016

From some tests, it seems like this may be specific to Chrome (perhaps Webkit/Blink browsers) - I'm not seeing those characters in Firefox and Internet Explorer. It might just be that they're hidden in other browsers, of course. Very odd - I'll request this is looked into.

FYI: Please send this kind of report in to Special:Contact, please :)