nokosage doesn't work on the normal boards anymore. It even is mentioned in the FAQ section, so it must be a bug.

It just displays as a visible "sage" now.
As a person who regularly uses sage when replying, nokosage is an option I want to keep using.

/q/ thread as a reference: http://boards.4chan.org/q/res/442489

Inb4 this comment gets posted three times thanks to Sys being glitchy.