Mistake in patch notes or Game

So in the patch notes you guys said that fervor still stacked off of abilities but in the actual game and in the client it doesn't say or do that. I don't know if this was just a mistake one way or the other either the patch notes were wrong or the game was. I honestly hope the game is wrong and that will be fixed soon, I honestly can't ever see myself taking that mastery on any champion if abilities can't generate stacks.

This is what was said for the patch notes.

Hitting champions with basic attacks and abilities generates a Fervor stack (2 for melee attacks, 2 second cooldown for abilities). This is unchanged.