K, M, N, with the "S" don't work anymore

The bug:
"S" symbol (found in the ¶ symbol) followed by K, M and N doesn't work anymore.
What I expected:
Typing to work as it did.
What happened:
The letters above do nothing. I have a working casino in my "Mega Game World" and I use a scrambled letters (k) as the "slots spinning" effect. Without this, it is just a sign with some random letters that look like it's from another language.
To recreate:
Type any of the before mentioned letters in a sign or the like.