I am not sure when it began (9.305, 9.306 both have this, both noticed in FF35), but when I am using FF for the management interface, and click on the help icon, the help page opens but the content is blank. Chrome 40 works fine. I do not know if this problem existed in FF34 or not, but I figured I would mention it. I am only a home user, so I cannot open a ticket with support.